diff --git a/contrib/include/wx/fl/controlbar.h b/contrib/include/wx/fl/controlbar.h
index 2763074049..9b07fdc036 100644
--- a/contrib/include/wx/fl/controlbar.h
+++ b/contrib/include/wx/fl/controlbar.h
@@ -1002,7 +1002,7 @@ which are usually the same for all panes in
 a frame layout.
 */
 
-class cbCommonPaneProperties : public wxObject
+class WXDLLIMPEXP_FL cbCommonPaneProperties : public wxObject
 {
     DECLARE_DYNAMIC_CLASS( cbCommonPaneProperties )