diff --git a/tests/test_nanterre_synchronize_federations.py b/tests/test_nanterre_synchronize_federations.py
index dd859df..207e7b2 100644
--- a/tests/test_nanterre_synchronize_federations.py
+++ b/tests/test_nanterre_synchronize_federations.py
@@ -2,6 +2,7 @@
 
 import csv
 
+from django.utils import six
 from django.utils.encoding import force_bytes
 from django.utils.six import StringIO
 
@@ -32,6 +33,12 @@ def test_synchronize_federations(settings, app, nanterre_classic_family, admin):
     response = response.click('Rapport')
 
     def check_csv_response(csv_response):
+        if six.PY3:
+            reader = csv.DictReader(StringIO(csv_response.text))
+            reader.fieldnames = reader.reader.__next__()
+        else:
+            reader = csv.DictReader(StringIO(csv_response.content))
+            reader.fieldnames = reader.reader.next()
         rows = list(reader)
 
         def rows_by_action(action):
diff --git a/zoo/zoo_nanterre/forms.py b/zoo/zoo_nanterre/forms.py
index 3a35814..4393ae1 100644
--- a/zoo/zoo_nanterre/forms.py
+++ b/zoo/zoo_nanterre/forms.py
@@ -15,6 +15,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 from django import forms
+from django.utils.encoding import force_text
 from django.utils.translation import ugettext_lazy as _
 from django.core.exceptions import ValidationError
 
@@ -64,7 +65,7 @@ class SynchronizeFederationsForm(forms.Form):
         errors = []
         for i, line in enumerate(csv_uploaded):
             try:
-                line.encode('ascii')
+                force_text(line).encode('ascii')
             # works with pyhton2 and 3
             except (UnicodeEncodeError, UnicodeDecodeError) as e:
                 errors.append(_(u'non-ASCII character on line {0} and column {1}').format(
diff --git a/zoo/zoo_nanterre/synchronize_federations.py b/zoo/zoo_nanterre/synchronize_federations.py
index 1dfa292..47169e8 100644
--- a/zoo/zoo_nanterre/synchronize_federations.py
+++ b/zoo/zoo_nanterre/synchronize_federations.py
@@ -23,6 +23,7 @@ from django.core.urlresolvers import reverse
 from django.conf import settings
 from django.db import DatabaseError
 from django.db.transaction import atomic
+from django.utils import six
 from django.utils.encoding import force_bytes
 from django.utils.six import StringIO
 
@@ -109,7 +110,10 @@ class SynchronizeFederationsImport(object):
         writer.writerow(['RSU ID', 'prenoms', 'nom de naissance',
                          'nom d\'usage', 'application', 'federation', 'action'])
         for action in self.actions:
-            action = [force_bytes(v) for v in action]
+            if six.PY3:
+                action = [v for v in action]
+            else:
+                action = [force_bytes(v) for v in action]
             writer.writerow(action)
         setattr(self.action, target + '_csv_filename',
                 self.action.csv_filename + '-report.csv')
diff --git a/zoo/zoo_nanterre/utils.py b/zoo/zoo_nanterre/utils.py
index de1c7f6..66bd43c 100644
--- a/zoo/zoo_nanterre/utils.py
+++ b/zoo/zoo_nanterre/utils.py
@@ -17,7 +17,6 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 from __future__ import print_function
-import six
 import functools
 import uuid
 import io
@@ -45,6 +44,7 @@ from django.db import transaction
 from django.contrib.auth.hashers import make_password
 from django.http import HttpResponse
 
+from django.utils import six
 from django.utils.timezone import now, make_aware
 from django.utils.encoding import force_bytes
 
@@ -1268,7 +1268,7 @@ def individu_caption(individu):
 
 
 def csv_export_response(rows, filename):
-    if sys.version >= (3,):
+    if six.PY3:
         with io.StringIO(newline='') as f:
             writer = csv.writer(f)
             for row in rows: