--- a/hooks/test/unittest_syncsession.py	Mon Sep 21 18:28:10 2015 +0200
+++ b/hooks/test/unittest_syncsession.py	Mon Sep 21 18:35:38 2015 +0200
@@ -22,6 +22,8 @@
   syncschema.py hooks are mostly tested in server/test/unittest_migrations.py
 """
 
+from six import text_type
+
 from cubicweb import ValidationError
 from cubicweb.devtools.testlib import CubicWebTC
 
@@ -32,13 +34,13 @@
             with self.assertRaises(ValidationError) as cm:
                 req.execute('INSERT CWProperty X: X pkey "bla.bla", '
                             'X value "hop", X for_user U')
-            cm.exception.translate(unicode)
+            cm.exception.translate(text_type)
             self.assertEqual(cm.exception.errors,
                              {'pkey-subject': 'unknown property key bla.bla'})
 
             with self.assertRaises(ValidationError) as cm:
                 req.execute('INSERT CWProperty X: X pkey "bla.bla", X value "hop"')
-            cm.exception.translate(unicode)
+            cm.exception.translate(text_type)
             self.assertEqual(cm.exception.errors,
                              {'pkey-subject': 'unknown property key bla.bla'})