diff --git a/addons/document/document.py b/addons/document/document.py
index ccd5c7afaf5..92b49a1b520 100644
--- a/addons/document/document.py
+++ b/addons/document/document.py
@@ -364,7 +364,7 @@ class document_directory(osv.osv):
                 if not ressource_parent_type_id:
                     ressource_parent_type_id=directory.ressource_parent_type_id and directory.ressource_parent_type_id.id or False
                 if not ressource_id:
-                    ressource_id=directory.ressource_id and directory.ressource_id.id or 0                
+                    ressource_id=directory.ressource_id and directory.ressource_id or 0                
                 res=self.search(cr,uid,[('id','<>',directory.id),('name','=',name),('parent_id','=',parent_id),('ressource_parent_type_id','=',ressource_parent_type_id),('ressource_id','=',ressource_id)])
                 if len(res):
                     return False