diff --git a/api/acl.py b/api/acl.py
index 9107a25d..0c336281 100644
--- a/api/acl.py
+++ b/api/acl.py
@@ -28,7 +28,7 @@ done.
 from django.conf import settings
 from django.contrib.auth.models import Permission
 from django.contrib.contenttypes.models import ContentType
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import ugettext as _
 
 
 def _create_api_permission():
@@ -71,4 +71,5 @@ def can_view(user):
         'codename': settings.API_PERMISSION_CODENAME
     }
     can = user.has_perm('%(app_label)s.%(codename)s' % kwargs)
-    return can, None if can else _("You cannot see this application.")
+    return can, None if can else _("You don't have the right to see this"
+                                   " application.")
diff --git a/api/authentication.py b/api/authentication.py
index cbc72b76..d426db24 100644
--- a/api/authentication.py
+++ b/api/authentication.py
@@ -46,6 +46,6 @@ class ExpiringTokenAuthentication(TokenAuthentication):
         )
         utc_now = datetime.datetime.now(datetime.timezone.utc)
         if token.created < utc_now - token_duration:
-            raise exceptions.AuthenticationFailed(_('Token has expired'))
+            raise exceptions.AuthenticationFailed(_("The token has expired."))
 
         return token.user, token
diff --git a/api/locale/fr/LC_MESSAGES/django.po b/api/locale/fr/LC_MESSAGES/django.po
new file mode 100644
index 00000000..f2d6755e
--- /dev/null
+++ b/api/locale/fr/LC_MESSAGES/django.po
@@ -0,0 +1,40 @@
+# Re2o est un logiciel d'administration développé initiallement au rezometz. Il
+# se veut agnostique au réseau considéré, de manière à être installable en
+# quelques clics.
+#
+# Copyright © 2018 Maël Kervella
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+msgid ""
+msgstr ""
+"Project-Id-Version: 2.5\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2019-01-08 23:06+0100\n"
+"PO-Revision-Date: 2019-01-07 01:37+0100\n"
+"Last-Translator: Laouen Fernet <laouen.fernet@supelec.fr>\n"
+"Language-Team: \n"
+"Language: fr_FR\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n > 1);\n"
+
+#: acl.py:74
+msgid "You don't have the right to see this application."
+msgstr "Vous n'avez pas le droit de voir cette application."
+
+#: authentication.py:49
+msgid "The token has expired."
+msgstr "Le jeton a expiré."