diff --git a/tryton/gui/window/preference.py b/tryton/gui/window/preference.py
index 53b40783d3..3f0359675c 100644
--- a/tryton/gui/window/preference.py
+++ b/tryton/gui/window/preference.py
@@ -86,7 +86,7 @@ class Preference(object):
                     vals = copy.copy(self.screen.get(get_modifiedonly=True))
                     if 'password' in vals:
                         password = common.ask(_('Current Password:'),
-                                self.win, visibility=False)
+                            visibility=False)
                         if not password:
                             break
                     else: