diff --git a/bin/addons/base/ir/ir_actions.py b/bin/addons/base/ir/ir_actions.py
index c100087ba89..37f1ab19643 100644
--- a/bin/addons/base/ir/ir_actions.py
+++ b/bin/addons/base/ir/ir_actions.py
@@ -28,7 +28,6 @@ from tools.translate import _
 import netsvc
 import re
 import copy
-import sys
 from xml import dom
 
 class actions(osv.osv):
@@ -220,7 +219,6 @@ class act_window(osv.osv):
         'search_view_id': fields.many2one('ir.ui.view', 'Search View Ref.'),
         'filter': fields.boolean('Filter'),
         'auto_search':fields.boolean('Auto Search'),
-        'default_user_ids': fields.many2many('res.users', 'ir_act_window_user_rel', 'act_id', 'uid', 'Users'),
         'search_view' : fields.function(_search_view, type='text', method=True, string='Search View'),
         'menus': fields.char('Menus', size=4096),
         'help': fields.text('Action description',