diff --git a/wxPython/src/controls2.i b/wxPython/src/controls2.i
index a4af34c4bc..37671c76bc 100644
--- a/wxPython/src/controls2.i
+++ b/wxPython/src/controls2.i
@@ -747,7 +747,7 @@ public:
         #ifdef __WXMSW__
             return self;
         #else
-            return (wxWindow*)m_mainWin;
+            return (wxWindow*)self->m_mainWin;
         #endif
         }
     }