diff --git a/assembly.py b/assembly.py
index 4f6dd85..13da7a2 100644
--- a/assembly.py
+++ b/assembly.py
@@ -3040,6 +3040,7 @@ class ViewProviderAssembly(ViewProviderAsmGroup):
             return False
         partGroup,owner,subname = info
         partGroup.dropObject(obj,owner,subname)
+        return '2.'
 
     def getIcon(self):
         if getattr(self.ViewObject.Object,'Freeze',False):