diff --git a/addons/project/project.py b/addons/project/project.py
index 62c1b34dbf9..2811f638f73 100644
--- a/addons/project/project.py
+++ b/addons/project/project.py
@@ -203,11 +203,7 @@ class project(osv.osv):
     
     def attachment_tree_view(self, cr, uid, ids, context):
         task_ids = self.pool.get('project.task').search(cr, uid, [('project_id', 'in', ids)])
-        domain = [
-            ('|', 
-             '&', 'res_model', '=', 'project.project'), ('res_id', 'in', ids),
-             '&', ('res_model', '=', 'project.task'), ('res_id', 'in', task_ids)
-		]
+        domain = ['|', '&', ('res_model', '=', 'project.project'), ('res_id', 'in', ids), '&', ('res_model', '=', 'project.task'), ('res_id', 'in', task_ids)]
         res_id = ids and ids[0] or False
         return {
             'name': _('Attachments'),