diff --git a/rtl/inc/generic.inc b/rtl/inc/generic.inc
index 8ffcb4ba4c..d31e070208 100644
--- a/rtl/inc/generic.inc
+++ b/rtl/inc/generic.inc
@@ -858,7 +858,7 @@ begin
        if assigned(pobjectvmt(vmt)^.parent) then
          vmt:=pobjectvmt(vmt)^.parent^
        else
-         exit;
+         vmt:=nil;
        {$endif}
    RunError(219);
 end;