diff --git a/tryton/gui/window/preference.py b/tryton/gui/window/preference.py
index 461fb0e9e8..807edf8c6d 100644
--- a/tryton/gui/window/preference.py
+++ b/tryton/gui/window/preference.py
@@ -6,10 +6,9 @@ import gtk
 import copy
 
 import tryton.rpc as rpc
-from tryton.common import RPCExecute, RPCException, Login, IconFactory
+from tryton.common import RPCExecute, RPCException, IconFactory
 from tryton.common.underline import set_underline
 from tryton.config import TRYTON_ICON
-from tryton.exceptions import TrytonError
 from tryton.gui import Main
 from tryton.gui.window.nomodal import NoModal
 from tryton.gui.window.view_form.screen import Screen
@@ -95,18 +94,10 @@ class Preference(NoModal):
         if response_id == gtk.RESPONSE_OK:
             if self.screen.current_record.validate():
                 vals = copy.copy(self.screen.get())
-                context = rpc.CONTEXT.copy()
-
-                def login(parameters):
-                    return rpc.execute(
-                        'model', 'res.user', 'set_preferences',
-                        vals, parameters, context)
                 try:
-                    Login(login)
-                except TrytonError as exception:
-                    if exception.faultCode == 'QueryCanceled':
-                        return
-                    raise
+                    RPCExecute('model', 'res.user', 'set_preferences', vals)
+                except RPCException:
+                    return
         self.parent.present()
         self.destroy()
         self.callback()