diff --git a/include/wx/mac/app.h b/include/wx/mac/app.h
index bdd9d9c648..3bc5e88b3a 100644
--- a/include/wx/mac/app.h
+++ b/include/wx/mac/app.h
@@ -85,6 +85,7 @@ public:
     static bool Initialize();
     static void CleanUp();
     
+    virtual bool OnInit();
     void DeletePendingObjects();
     bool ProcessIdle();
     bool IsExiting() { return !m_keepGoing ; }