diff --git a/include/wx/msw/icon.h b/include/wx/msw/icon.h
index 1d9305e9aa..5c14c2129f 100644
--- a/include/wx/msw/icon.h
+++ b/include/wx/msw/icon.h
@@ -23,7 +23,7 @@
 // compatible (even if incorrect) behaviour by default: derive wxIcon from
 // wxBitmap
 #ifndef wxICON_IS_BITMAP
-    #define wxICON_IS_BITMAP 1
+    #define wxICON_IS_BITMAP 0
 #endif
 
 #if wxICON_IS_BITMAP