diff --git a/product/ERP5Type/dynamic/lazy_class.py b/product/ERP5Type/dynamic/lazy_class.py
index 29bb915f309ac85a15976a0d13153ab5136e4fde..a4e8bbe6b52b844e386e173c8bcbddc0d8a24747 100644
--- a/product/ERP5Type/dynamic/lazy_class.py
+++ b/product/ERP5Type/dynamic/lazy_class.py
@@ -21,7 +21,7 @@ from portal_type_class import generatePortalTypeClass
 from accessor_holder import AccessorHolderType
 import persistent_migration
 
-class ERP5BaseBroken(Broken, ERP5Base):
+class ERP5BaseBroken(Broken, ERP5Base, PersistentBroken):
   # PersistentBroken can't be reused directly
   # because its « layout differs from 'GhostPortalType' »