diff --git a/include/WinStd/Base64.h b/include/WinStd/Base64.h
index 9728dcbf..546f0c1e 100644
--- a/include/WinStd/Base64.h
+++ b/include/WinStd/Base64.h
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 ///
diff --git a/include/WinStd/COM.h b/include/WinStd/COM.h
index 2f3423ab..80f68c2b 100644
--- a/include/WinStd/COM.h
+++ b/include/WinStd/COM.h
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 ///
diff --git a/include/WinStd/Common.h b/include/WinStd/Common.h
index 3bbc2e09..ac090b82 100644
--- a/include/WinStd/Common.h
+++ b/include/WinStd/Common.h
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 ///
diff --git a/include/WinStd/Cred.h b/include/WinStd/Cred.h
index 9e08cdbf..758d344b 100644
--- a/include/WinStd/Cred.h
+++ b/include/WinStd/Cred.h
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 ///
diff --git a/include/WinStd/Crypt.h b/include/WinStd/Crypt.h
index 941d9773..96b6df00 100644
--- a/include/WinStd/Crypt.h
+++ b/include/WinStd/Crypt.h
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 ///
diff --git a/include/WinStd/EAP.h b/include/WinStd/EAP.h
index 87539980..97c7e231 100644
--- a/include/WinStd/EAP.h
+++ b/include/WinStd/EAP.h
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 ///
diff --git a/include/WinStd/ETW.h b/include/WinStd/ETW.h
index d1e6c92f..8e69ff6d 100644
--- a/include/WinStd/ETW.h
+++ b/include/WinStd/ETW.h
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 ///
diff --git a/include/WinStd/GDI.h b/include/WinStd/GDI.h
index c7097bd4..a271eae4 100644
--- a/include/WinStd/GDI.h
+++ b/include/WinStd/GDI.h
@@ -1,20 +1,6 @@
 /*
+    ​SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 ///
diff --git a/include/WinStd/Hex.h b/include/WinStd/Hex.h
index f6a8e7e4..9abf2e69 100644
--- a/include/WinStd/Hex.h
+++ b/include/WinStd/Hex.h
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 ///
diff --git a/include/WinStd/MSI.h b/include/WinStd/MSI.h
index 4fe18fe4..3d0809e0 100644
--- a/include/WinStd/MSI.h
+++ b/include/WinStd/MSI.h
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 ///
diff --git a/include/WinStd/Sec.h b/include/WinStd/Sec.h
index e18e4529..8cc9fa29 100644
--- a/include/WinStd/Sec.h
+++ b/include/WinStd/Sec.h
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 ///
diff --git a/include/WinStd/SetupAPI.h b/include/WinStd/SetupAPI.h
index ad7ad50f..9c0cfe50 100644
--- a/include/WinStd/SetupAPI.h
+++ b/include/WinStd/SetupAPI.h
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
  ///
diff --git a/include/WinStd/Shell.h b/include/WinStd/Shell.h
index 23ade34c..ca053278 100644
--- a/include/WinStd/Shell.h
+++ b/include/WinStd/Shell.h
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 ///
diff --git a/include/WinStd/WLAN.h b/include/WinStd/WLAN.h
index 69d393a1..8024581d 100644
--- a/include/WinStd/WLAN.h
+++ b/include/WinStd/WLAN.h
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 ///
diff --git a/include/WinStd/Win.h b/include/WinStd/Win.h
index 55c8f8be..2858ffb0 100644
--- a/include/WinStd/Win.h
+++ b/include/WinStd/Win.h
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 ///
diff --git a/include/WinStd/WinSock2.h b/include/WinStd/WinSock2.h
index f77059ec..ad5e92ce 100644
--- a/include/WinStd/WinSock2.h
+++ b/include/WinStd/WinSock2.h
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 ///
diff --git a/include/WinStd/WinTrust.h b/include/WinStd/WinTrust.h
index f6d9f3d5..948aab9e 100644
--- a/include/WinStd/WinTrust.h
+++ b/include/WinStd/WinTrust.h
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/Base64.cpp b/src/Base64.cpp
index b1b6179b..dd9c5291 100644
--- a/src/Base64.cpp
+++ b/src/Base64.cpp
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "PCH.h"
diff --git a/src/COM.cpp b/src/COM.cpp
index 71455b3f..d268a321 100644
--- a/src/COM.cpp
+++ b/src/COM.cpp
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "PCH.h"
diff --git a/src/Crypt.cpp b/src/Crypt.cpp
index 8c712217..89465907 100644
--- a/src/Crypt.cpp
+++ b/src/Crypt.cpp
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "PCH.h"
diff --git a/src/EAP.cpp b/src/EAP.cpp
index f5360e8c..19c40d98 100644
--- a/src/EAP.cpp
+++ b/src/EAP.cpp
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "PCH.h"
diff --git a/src/ETW.cpp b/src/ETW.cpp
index fdab05e0..7858abd2 100644
--- a/src/ETW.cpp
+++ b/src/ETW.cpp
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "PCH.h"
diff --git a/src/GDI.cpp b/src/GDI.cpp
index b67cd6bb..bc2e849d 100644
--- a/src/GDI.cpp
+++ b/src/GDI.cpp
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "PCH.h"
diff --git a/src/PCH.cpp b/src/PCH.cpp
index 16cf140b..7cbe89e0 100644
--- a/src/PCH.cpp
+++ b/src/PCH.cpp
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "PCH.h"
diff --git a/src/PCH.h b/src/PCH.h
index 270a5357..3d748900 100644
--- a/src/PCH.h
+++ b/src/PCH.h
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 #pragma once
diff --git a/src/Sec.cpp b/src/Sec.cpp
index 0601bb4c..260ca8b0 100644
--- a/src/Sec.cpp
+++ b/src/Sec.cpp
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "PCH.h"
diff --git a/src/SetupAPI.cpp b/src/SetupAPI.cpp
index fbea8725..37f4bd39 100644
--- a/src/SetupAPI.cpp
+++ b/src/SetupAPI.cpp
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "PCH.h"
diff --git a/src/WLAN.cpp b/src/WLAN.cpp
index 8c766dd6..65b10b36 100644
--- a/src/WLAN.cpp
+++ b/src/WLAN.cpp
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "PCH.h"
diff --git a/src/Win.cpp b/src/Win.cpp
index 0307b77e..4c8d81e1 100644
--- a/src/Win.cpp
+++ b/src/Win.cpp
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "PCH.h"
diff --git a/src/WinSock2.cpp b/src/WinSock2.cpp
index 3664b0e0..2019aa93 100644
--- a/src/WinSock2.cpp
+++ b/src/WinSock2.cpp
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "PCH.h"
diff --git a/src/WinTrust.cpp b/src/WinTrust.cpp
index e024af1d..20f5b549 100644
--- a/src/WinTrust.cpp
+++ b/src/WinTrust.cpp
@@ -1,21 +1,7 @@
 /*
+    SPDX-License-Identifier: GPL-3.0-or-later
     Copyright © 1991-2021 Amebis
     Copyright © 2016 GÉANT
-
-    This file is part of WinStd.
-
-    Setup is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Setup is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Setup. If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "PCH.h"