diff --git a/include/wx/frame.h b/include/wx/frame.h
index 87c08f3ed7..915fd88724 100644
--- a/include/wx/frame.h
+++ b/include/wx/frame.h
@@ -19,7 +19,6 @@
 #include "wx/toplevel.h"      // the base class
 
 // the default names for various classs
-extern WXDLLEXPORT_DATA(const wxChar) wxFrameNameStr[];
 extern WXDLLEXPORT_DATA(const wxChar) wxStatusLineNameStr[];
 extern WXDLLEXPORT_DATA(const wxChar) wxToolBarNameStr[];
 
diff --git a/include/wx/msw/mdi.h b/include/wx/msw/mdi.h
index 5bbaef70db..b872359a2b 100644
--- a/include/wx/msw/mdi.h
+++ b/include/wx/msw/mdi.h
@@ -14,7 +14,6 @@
 
 #include "wx/frame.h"
 
-extern WXDLLEXPORT_DATA(const wxChar) wxFrameNameStr[];
 extern WXDLLEXPORT_DATA(const wxChar) wxStatusLineNameStr[];
 
 class WXDLLEXPORT wxMDIClientWindow;