diff --git a/models/project.py b/models/project.py
index 9cdc9043c3c0408caca83036e993bf1c9b0a0fa9..f86464d5d94feaf9a03827ff642dbaca57654f6c 100644
--- a/models/project.py
+++ b/models/project.py
@@ -316,8 +316,8 @@ class AlfodooProject(models.Model):
                                 child, child.child_ids, path_n, cmis_obj_n,
                                 backend)
                     else:
-                        backend = obj._fields['cmis_folder']
-                        folder = backend.get_cmis_object(obj)
+                        back = obj._fields['cmis_folder']
+                        folder = back.get_cmis_object(obj)
                         self.update_list_properties(child, folder)
             else:
                 path_n = path + [child.name]