diff --git a/bin/addons/base/ir/ir_values.py b/bin/addons/base/ir/ir_values.py
index 6641759f1eb..585b9398f10 100644
--- a/bin/addons/base/ir/ir_values.py
+++ b/bin/addons/base/ir/ir_values.py
@@ -24,7 +24,6 @@ from osv import osv,fields
 from osv.orm import except_orm
 import pickle
 from tools.translate import _
-import tools
 
 class ir_values(osv.osv):
     _name = 'ir.values'
@@ -236,7 +235,7 @@ class ir_values(osv.osv):
                     #ir_del(cr, uid, x[0])
                     return False
             else:
-                datas = pickle.loads(tools.ustr(x[2]))
+                datas = pickle.loads(str(x[2].encode('utf-8')))
             if meta:
                 meta2 = pickle.loads(x[4])
                 return (x[0],x[1],datas,meta2)