diff --git a/modoboa/core/tests.py b/modoboa/core/tests.py
index 3a8e0aa42..c64432991 100644
--- a/modoboa/core/tests.py
+++ b/modoboa/core/tests.py
@@ -22,7 +22,7 @@ class ProfileTestCase(ModoTestCase):
         * A normal user changes his password
         """
         self.ajax_post(reverse("core:user_profile"),
-                       {"oldpassword": "password",
+                       {"language": "en", "oldpassword": "password",
                         "newpassword": "12345Toi", "confirmation": "12345Toi"})
         self.clt.logout()