diff --git a/include/wx/generic/dirdlgg.h b/include/wx/generic/dirdlgg.h
index 74ac59feb0..7fd5768b02 100644
--- a/include/wx/generic/dirdlgg.h
+++ b/include/wx/generic/dirdlgg.h
@@ -68,6 +68,7 @@
 //-----------------------------------------------------------------------------
 
 WXDLLEXPORT_DATA(extern const wxChar*) wxFileSelectorPromptStr;
+WXDLLEXPORT_DATA(extern const wxChar*) wxDirDialogDefaultFolderStr;
 
 //-----------------------------------------------------------------------------
 // classes