diff --git a/chrono/manager/forms.py b/chrono/manager/forms.py
index 4d7d5ffa..149351f9 100644
--- a/chrono/manager/forms.py
+++ b/chrono/manager/forms.py
@@ -179,7 +179,7 @@ class ImportEventsForm(forms.Form):
         # this line with content being a unicode string.
 
         try:
-            dialect = csv.Sniffer().sniff(content)
+            dialect = csv.Sniffer().sniff(content if six.PY3 else content.encode('utf-8'))
         except csv.Error:
             dialect = None
 
diff --git a/tests/test_manager.py b/tests/test_manager.py
index a9157b0c..be6efb7b 100644
--- a/tests/test_manager.py
+++ b/tests/test_manager.py
@@ -616,6 +616,13 @@ def test_import_events(app, admin_user):
     assert Event.objects.count() == 2
     Event.objects.all().delete()
 
+    resp = app.get('/manage/agendas/%s/import-events' % agenda.id, status=200)
+    resp.form['events_csv_file'] = Upload('t.csv', '"date"\t"time"\t"etc."\n'
+                                                   '"2016-09-16"\t"18:00"\t"10"\t"5"\t"éléphant"\n'
+                                                   '"2016-09-19"\t"18:00"\t"10"'.encode('iso-8859-15'), 'text/csv')
+    resp = resp.form.submit(status=302)
+    assert Event.objects.count() == 2
+
 
 def test_add_meetings_agenda(app, admin_user):
     app = login(app)