diff --git a/src/msw/toplevel.cpp b/src/msw/toplevel.cpp
index 6724b8d4a6..2132b62467 100644
--- a/src/msw/toplevel.cpp
+++ b/src/msw/toplevel.cpp
@@ -34,6 +34,7 @@
     #include "wx/string.h"
     #include "wx/log.h"
     #include "wx/intl.h"
+    #include "wx/frame.h"
 #endif //WX_PRECOMP
 
 #include "wx/msw/private.h"