diff --git a/gestion/affich_tools.py b/gestion/affich_tools.py
index 2805983e..d2ee3f03 100755
--- a/gestion/affich_tools.py
+++ b/gestion/affich_tools.py
@@ -25,7 +25,7 @@ def dialog(backtitle,arg) :
     si erreur dans les arguments raise RuntimeError
     """
     f = tempfile.NamedTemporaryFile()
-    cmd = u'/usr/bin/dialog --backtitle "%s" --cancel-label "Retour" %s 2>%s' % (backtitle,arg,f.name)
+    cmd = u'LANG=fr_FR@euro /usr/bin/dialog --backtitle "%s" --cancel-label "Retour" %s 2>%s' % (backtitle,arg,f.name)
     res = os.system(cmd.encode('iso-8859-15','ignore'))
 
     if res == 256 :