diff --git a/lcl/buttonpanel.pas b/lcl/buttonpanel.pas
index 7644cacba1..f552c28295 100644
--- a/lcl/buttonpanel.pas
+++ b/lcl/buttonpanel.pas
@@ -44,6 +44,7 @@ type
     property Font;
     property Glyph;
     property Name stored True;
+    property PopupMenu;
     property ShowHint;
     property OnClick;
   end;