diff --git a/include/wx/headerctrl.h b/include/wx/headerctrl.h
index 9869cfd2dd..170cf641db 100644
--- a/include/wx/headerctrl.h
+++ b/include/wx/headerctrl.h
@@ -268,13 +268,13 @@ private:
 };
 
 
-extern WXDLLIMPEXP_ADV const wxEventType wxEVT_COMMAND_HEADER_CLICK;
-extern WXDLLIMPEXP_ADV const wxEventType wxEVT_COMMAND_HEADER_RIGHT_CLICK;
-extern WXDLLIMPEXP_ADV const wxEventType wxEVT_COMMAND_HEADER_MIDDLE_CLICK;
+extern WXDLLIMPEXP_CORE const wxEventType wxEVT_COMMAND_HEADER_CLICK;
+extern WXDLLIMPEXP_CORE const wxEventType wxEVT_COMMAND_HEADER_RIGHT_CLICK;
+extern WXDLLIMPEXP_CORE const wxEventType wxEVT_COMMAND_HEADER_MIDDLE_CLICK;
 
-extern WXDLLIMPEXP_ADV const wxEventType wxEVT_COMMAND_HEADER_DCLICK;
-extern WXDLLIMPEXP_ADV const wxEventType wxEVT_COMMAND_HEADER_RIGHT_DCLICK;
-extern WXDLLIMPEXP_ADV const wxEventType wxEVT_COMMAND_HEADER_MIDDLE_DCLICK;
+extern WXDLLIMPEXP_CORE const wxEventType wxEVT_COMMAND_HEADER_DCLICK;
+extern WXDLLIMPEXP_CORE const wxEventType wxEVT_COMMAND_HEADER_RIGHT_DCLICK;
+extern WXDLLIMPEXP_CORE const wxEventType wxEVT_COMMAND_HEADER_MIDDLE_DCLICK;
 
 typedef void (wxEvtHandler::*wxHeaderCtrlEventFunction)(wxHeaderCtrlEvent&);