diff --git a/product/ERP5/mixin/rule.py b/product/ERP5/mixin/rule.py
index 0d53e05c43bd864d20ae3f28efcfc981595fbd71..ae6f6d1fda5ec01c4a84aa84a4bbdf67f8925887 100644
--- a/product/ERP5/mixin/rule.py
+++ b/product/ERP5/mixin/rule.py
@@ -28,6 +28,8 @@
 
 import zope.interface
 from AccessControl import ClassSecurityInfo
+from Acquisition import aq_base
+from Products.CMFCore.utils import getToolByName
 from Products.ERP5Type import Permissions, interfaces
 
 def _compare(tester_list, prevision_movement, decision_movement):