diff -r 79ff784cd8af -r 7f6b5f023884 hooks/syncsession.py
--- a/hooks/syncsession.py	Fri Sep 11 18:01:36 2015 +0200
+++ b/hooks/syncsession.py	Fri Sep 11 18:05:38 2015 +0200
@@ -18,7 +18,7 @@
 """Core hooks: synchronize living session on persistent data changes"""
 
 __docformat__ = "restructuredtext en"
-_ = unicode
+from cubicweb import _
 
 from cubicweb import UnknownProperty, BadConnectionId, validation_error
 from cubicweb.predicates import is_instance