diff --git a/include/wx/generic/filepickerg.h b/include/wx/generic/filepickerg.h
index accfe2d266..bb2c867364 100644
--- a/include/wx/generic/filepickerg.h
+++ b/include/wx/generic/filepickerg.h
@@ -18,8 +18,8 @@
 #include "wx/dirdlg.h"
 
 
-extern const wxEventType wxEVT_COMMAND_DIRPICKER_CHANGED;
-extern const wxEventType wxEVT_COMMAND_FILEPICKER_CHANGED;
+extern WXDLLEXPORT_DATA(const wxEventType) wxEVT_COMMAND_DIRPICKER_CHANGED;
+extern WXDLLEXPORT_DATA(const wxEventType) wxEVT_COMMAND_FILEPICKER_CHANGED;
 
 
 //-----------------------------------------------------------------------------