diff -r 6b3523f81f42 -r 26744ad37953 cubicweb/web/test/unittest_views_json.py
--- a/cubicweb/web/test/unittest_views_json.py	Fri Apr 05 17:21:14 2019 +0200
+++ b/cubicweb/web/test/unittest_views_json.py	Fri Apr 05 17:58:19 2019 +0200
@@ -16,7 +16,6 @@
 #
 # You should have received a copy of the GNU Lesser General Public License along
 # with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
-from six import binary_type
 
 from cubicweb.devtools.testlib import CubicWebTC
 
@@ -50,7 +49,7 @@
                              'rql': u'Any GN,COUNT(X) GROUPBY GN ORDERBY GN '
                              'WHERE X in_group G, G name GN'})
             data = self.ctrl_publish(req, ctrl='jsonp')
-            self.assertIsInstance(data, binary_type)
+            self.assertIsInstance(data, bytes)
             self.assertEqual(req.headers_out.getRawHeaders('content-type'),
                              ['application/javascript'])
             # because jsonp anonymizes data, only 'guests' group should be found