diff --git a/product/ERP5Type/PropertySheet/__init__.py b/product/ERP5Type/PropertySheet/__init__.py
index 78cd698ce48fd13122012205565b10760c2cfa9a..7be1bd16e755aaf69871762d5685f9acad87735b 100644
--- a/product/ERP5Type/PropertySheet/__init__.py
+++ b/product/ERP5Type/PropertySheet/__init__.py
@@ -4,3 +4,7 @@ from Folder import Folder
 from SimpleItem import SimpleItem
 from XMLObject import XMLObject
 from DocumentationHelper import DocumentationHelper
+from BaseType import BaseType
+from ActionInformation import ActionInformation
+from RoleInformation import RoleInformation
+from TranslationInformation import TranslationInformation