diff --git a/src/os2/spinbutt.cpp b/src/os2/spinbutt.cpp
index 21afeeab63..de2ccd00a9 100644
--- a/src/os2/spinbutt.cpp
+++ b/src/os2/spinbutt.cpp
@@ -9,6 +9,11 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
+#ifdef __GNUG__
+    #pragma implementation "spinbutt.h"
+    #pragma implementation "spinbutbase.h"
+#endif
+
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
diff --git a/src/os2/spinctrl.cpp b/src/os2/spinctrl.cpp
index 2eeb84483e..edfa2468f3 100644
--- a/src/os2/spinctrl.cpp
+++ b/src/os2/spinctrl.cpp
@@ -14,6 +14,11 @@
 // ============================================================================
 
 
+#ifdef __GNUG__
+    #pragma implementation "spinctrlbase.h"
+    #pragma implementation "spinctrl.h"
+#endif
+
 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------