diff --git a/gestion/mail/mail.py b/gestion/mail/mail.py
index e7abb26f..64fcdc24 100644
--- a/gestion/mail/mail.py
+++ b/gestion/mail/mail.py
@@ -6,6 +6,7 @@ import jinja2
 import sys
 import json
 import inspect
+import locale
 
 from email.header import Header
 from email.message import Message
@@ -28,7 +29,14 @@ text_mutilang_template = template_path + 'text_multilang'
 
 templateLoader = jinja2.FileSystemLoader( searchpath=["/", template_path]  )
 templateEnv = jinja2.Environment( loader=templateLoader )
-templateEnv.filters['date'] = lambda d: d.strftime('%d %B %Y')
+
+def format_date(d):
+    if 'fr_FR' in locale.getlocale():
+        return d.strftime('%A %d %B %Y')
+    else:
+        return d.strftime('%A, %B %d %Y')
+
+templateEnv.filters['date'] = format_date
 
 
 # file extension to rendering function map