--- a/cubicweb/server/sqlutils.py	Thu Mar 19 21:19:52 2015 +0100
+++ b/cubicweb/server/sqlutils.py	Fri Feb 05 14:48:23 2016 +0100
@@ -584,6 +584,7 @@
 def _init_postgres_connection(cnx):
     """Internal function that will be called to init a postgresql connection"""
     cnx.cursor().execute('SET TIME ZONE UTC')
+    cnx.cursor().execute("SET lc_messages to 'C'")
     # commit is needed, else setting are lost if the connection is first
     # rolled back
     cnx.commit()