diff --git a/components/anchordocking/design/registeranchordocking.pas b/components/anchordocking/design/registeranchordocking.pas
index 453c62aa55..28044e0fd7 100644
--- a/components/anchordocking/design/registeranchordocking.pas
+++ b/components/anchordocking/design/registeranchordocking.pas
@@ -157,6 +157,7 @@ begin
   NewBounds:=Rect(0,0,0,0);
   DockSiblingName:='';
   DockAlign:=alNone;
+  Creator := nil;
 
   // get the embedded control
   AControl:=DockMaster.GetControl(AForm);