--- a/web/views/dotgraphview.py	Fri Sep 11 18:01:36 2015 +0200
+++ b/web/views/dotgraphview.py	Fri Sep 11 18:05:38 2015 +0200
@@ -18,7 +18,7 @@
 """some basic stuff to build dot generated graph images"""
 
 __docformat__ = "restructuredtext en"
-_ = unicode
+from cubicweb import _
 
 import tempfile
 import os