diff --git a/include/wx/textctrl.h b/include/wx/textctrl.h
index 5701847e56..582cf855cc 100644
--- a/include/wx/textctrl.h
+++ b/include/wx/textctrl.h
@@ -46,6 +46,10 @@
     #endif // wxUSE_STD_IOSTREAM/!wxUSE_STD_IOSTREAM
 #endif
 
+#if defined(__WXMSW__) && defined(__MINGW32__)
+    #include "wx/msw/winundef.h"
+#endif
+
 class WXDLLEXPORT wxTextCtrl;
 class WXDLLEXPORT wxTextCtrlBase;