diff --git a/include/wx/osx/app.h b/include/wx/osx/app.h
index 24b2504b18..901254c85f 100644
--- a/include/wx/osx/app.h
+++ b/include/wx/osx/app.h
@@ -97,7 +97,6 @@ private:
     WXEVENTHANDLERREF     m_macEventHandler ;
     WXEVENTHANDLERCALLREF m_macCurrentEventHandlerCallRef ;
     WXEVENTREF            m_macCurrentEvent ;
-    CFRunLoopSourceRef    m_macEventPosted ;
 
 public:
     static long           s_macAboutMenuItemId ;