diff --git a/product/ERP5Type/Base.py b/product/ERP5Type/Base.py
index 37248d089213ba6762669f02761d9fb83af3e77a..81e8b77a3cc84be46c4a6a9ebe2fd3bd838bc8c4 100644
--- a/product/ERP5Type/Base.py
+++ b/product/ERP5Type/Base.py
@@ -42,6 +42,7 @@ from Acquisition import aq_base, aq_inner, aq_acquire, aq_chain
 import OFS.History
 from OFS.SimpleItem import SimpleItem
 from OFS.PropertyManager import PropertyManager
+from zExceptions import NotFound
 
 from ZopePatch import ERP5PropertyManager