diff --git a/contrib/include/wx/ogl/basic.h b/contrib/include/wx/ogl/basic.h
index d447693dfa..1127a23ef2 100644
--- a/contrib/include/wx/ogl/basic.h
+++ b/contrib/include/wx/ogl/basic.h
@@ -124,7 +124,7 @@ class WXDLLEXPORT wxExprDatabase;
 
 
 
-class wxShapeEvtHandler: public wxObject
+class wxShapeEvtHandler: public wxObject, public wxClientDataContainer
 {
  DECLARE_DYNAMIC_CLASS(wxShapeEvtHandler)