diff --git a/product/ERP5Type/PropertySheet/Folder.py b/product/ERP5Type/PropertySheet/Folder.py
index 6dc7905c463b5c6c95292a0c115f8eefc4f240ca..e4c9c272f33db7dbcae80776951cdd1a8d4761c6 100644
--- a/product/ERP5Type/PropertySheet/Folder.py
+++ b/product/ERP5Type/PropertySheet/Folder.py
@@ -42,7 +42,7 @@ class Folder:
         {   'id'          : 'last_id',
             'description' : 'The default ID group for objects in this folder',
             'type'        : 'string',
-            'default'     : '1',
+            'default'     : '0',
             'mode'        : 'w'},
         {   'id'          : 'id_generator',
             'description' : 'The name of the function to use to generate the Id of a new contained object. Default behaviour (when this value is not set or the function cannot be found) is to increment last_id and update it.',