diff --git a/wxPython/src/_toplvl.i b/wxPython/src/_toplvl.i
index 2629566dfe..52bfd7bf62 100644
--- a/wxPython/src/_toplvl.i
+++ b/wxPython/src/_toplvl.i
@@ -128,6 +128,10 @@ public:
     // is successful.)
     virtual bool SetShape(const wxRegion& region);
 
+#ifdef __WXMAC__
+    void MacSetMetalAppearance( bool on ) ;
+    bool MacGetMetalAppearance() const ;
+#endif
 };