diff --git a/include/Mw/Dialog/FileChooser.h b/include/Mw/Dialog/FileChooser.h
index d086a74..fbabc49 100644
--- a/include/Mw/Dialog/FileChooser.h
+++ b/include/Mw/Dialog/FileChooser.h
@@ -27,7 +27,7 @@ MWDECL MwWidget MwFileChooser(MwWidget handle, const char* title);
  * @param dir Show directory only or not
  * @return Widget
  */
-MwWidget MwFileChooserEx(MwWidget handle, const char* title, int dir);
+MWDECL MwWidget MwFileChooserEx(MwWidget handle, const char* title, int dir);
 
 #ifdef __cplusplus
 }