diff --git a/wst/trunk/object_serializer.pas b/wst/trunk/object_serializer.pas
index 6dca666e1..ef8f1227c 100644
--- a/wst/trunk/object_serializer.pas
+++ b/wst/trunk/object_serializer.pas
@@ -160,7 +160,7 @@ type
     procedure SetPropertyOptions(
       const APropName : string;
       const AOptions : TTypeRegistryItemOptions
-    ); virtual;
+    ); override;
     function GetSerializer() : TSimpleContentObjectSerializer;{$IFDEF USE_INLINE}inline;{$ENDIF}
   end;