diff --git a/src/Mod/Draft/Draft.py b/src/Mod/Draft/Draft.py
index d10278a23..a0a96e0f8 100644
--- a/src/Mod/Draft/Draft.py
+++ b/src/Mod/Draft/Draft.py
@@ -3006,6 +3006,7 @@ def downgrade(objects,delete=False,force=None):
     onlyedges = True
     parts = []
     solids = []
+    result = None
 
     for o in objects:
         if o.isDerivedFrom("Part::Feature"):