diff --git a/src/msw/dirdlg.cpp b/src/msw/dirdlg.cpp
index 9936da7cfc..00f01d719f 100644
--- a/src/msw/dirdlg.cpp
+++ b/src/msw/dirdlg.cpp
@@ -37,7 +37,7 @@
     #include "wx/dialog.h"
     #include "wx/dirdlg.h"
     #include "wx/log.h"
-    #include "wx/app/h"
+    #include "wx/app.h"     // for GetComCtl32Version()
 #endif
 
 #include "wx/msw/private.h"