diff --git a/bin/addons/base/res/res_lang.py b/bin/addons/base/res/res_lang.py
index f59127318ec..ccb8cffcba2 100644
--- a/bin/addons/base/res/res_lang.py
+++ b/bin/addons/base/res/res_lang.py
@@ -43,7 +43,7 @@ class lang(osv.osv):
         values_obj = self.pool.get('ir.values')
         if not lang_ids:
             lang_id = self.load_lang(cr, uid, lang)
-        default_value = values_obj.get(cr, uid, 'default', False, 'res.partner')
+        default_value = values_obj.get(cr, uid, 'default', False, ['res.partner'])
         if not default_value:
             values_obj.set(cr, uid, 'default', False, 'lang', ['res.partner'], lang)
         return True