diff --git a/src/gtk1/button.cpp b/src/gtk1/button.cpp
index b3898b46b0..f84cfc3221 100644
--- a/src/gtk1/button.cpp
+++ b/src/gtk1/button.cpp
@@ -13,6 +13,11 @@
 #if wxUSE_BUTTON
 
 #include "wx/button.h"
+
+#ifndef WX_PRECOMP
+    #include "wx/toplevel.h"
+#endif
+
 #include "wx/stockitem.h"
 
 #include "wx/gtk1/private.h"
diff --git a/src/motif/button.cpp b/src/motif/button.cpp
index ed2ded5373..b917a07c12 100644
--- a/src/motif/button.cpp
+++ b/src/motif/button.cpp
@@ -27,6 +27,11 @@
 #pragma message enable nosimpint
 #endif
 
+
+#ifndef WX_PRECOMP
+    #include "wx/toplevel.h"
+#endif
+
 #include "wx/stockitem.h"
 #include "wx/motif/private.h"
 #include "wx/sysopt.h"