diff --git a/openerp/addons/base/res/res_users.py b/openerp/addons/base/res/res_users.py
index 51be4adc747..bb1e8ec26bb 100644
--- a/openerp/addons/base/res/res_users.py
+++ b/openerp/addons/base/res/res_users.py
@@ -700,7 +700,7 @@ class users_view(osv.osv):
         self._process_values_groups(cr, uid, values, context)
         return super(users_view, self).write(cr, uid, ids, values, context)
 
-    def read(self, cr, uid, ids, fields, context=None, load='_classic_read'):
+    def read(self, cr, uid, ids, fields=None, context=None, load='_classic_read'):
         if not fields:
             group_fields, fields = [], self.fields_get(cr, uid, context).keys()
         else: