diff --git a/product/ERP5/mixin/rule.py b/product/ERP5/mixin/rule.py
index 9218b9fae61bd8e9151e1eb0a5b93607b1ac87ec..e1609d5c41d3c650a3f44d5d3fdcb07dbfe836ad 100644
--- a/product/ERP5/mixin/rule.py
+++ b/product/ERP5/mixin/rule.py
@@ -238,10 +238,7 @@ class RuleMixin(Predicate):
     delivery = movement.getDeliveryValue()
     if delivery is None:
       return False
-    if len(self.getDivergenceList(movement)) == 0:
-      return False
-    else:
-      return True
+    return len(self.getDivergenceList(movement)) != 0
 
   security.declareProtected(Permissions.View, 'getDivergenceList')
   def getDivergenceList(self, movement):