diff --git a/gestion/mail/fin_connexion.py b/gestion/mail/fin_connexion.py
index 49be7044..51f86c04 100755
--- a/gestion/mail/fin_connexion.py
+++ b/gestion/mail/fin_connexion.py
@@ -15,6 +15,7 @@ from lc_ldap.variables import base_dn
 import ldap
 from affich_tools import coul
 import gestion.mail as mail_module
+from locale_util import setlocale
 
 #: Une journée (c'est plus pratique)
 DAY = datetime.timedelta(days=1)
@@ -70,7 +71,10 @@ def warn(adh, delai):
     data = {'delai': delai}
     for l in ['adhesion', 'connexion']:
         fin = max(parse_gtf(v.value) for v in adh['fin' + l.capitalize()])
-        fin = fin.date().strftime('%d %B %Y')
+        # TODO mettre cette partie dans la génération multilangue de
+        # mail_module et faire un filtre jinja idoine
+        with setlocale('fr_FR.UTF-8'):
+            fin = fin.date().strftime('%d %B %Y')
         data['fin_%s' % l] = fin
 
     From = 'respbats@crans.org'
diff --git a/gestion/mail/locale_util.py b/gestion/mail/locale_util.py
new file mode 100644
index 00000000..d69b903c
--- /dev/null
+++ b/gestion/mail/locale_util.py
@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# Source:
+# http://stackoverflow.com/questions/18593661/how-do-i-strftime-a-date-object-in-a-different-locale
+import locale
+import threading
+
+from datetime import datetime
+from contextlib import contextmanager
+
+
+LOCALE_LOCK = threading.Lock()
+
+@contextmanager
+def setlocale(name):
+    with LOCALE_LOCK:
+        saved = locale.setlocale(locale.LC_ALL)
+        try:
+            yield locale.setlocale(locale.LC_ALL, name)
+        finally:
+            locale.setlocale(locale.LC_ALL, saved)
+