diff --git a/plinth/__main__.py b/plinth/__main__.py
index 3df4040e6..432b6e6c7 100644
--- a/plinth/__main__.py
+++ b/plinth/__main__.py
@@ -229,6 +229,7 @@ def configure_django():
         MESSAGE_TAGS={message_constants.ERROR: 'danger'},
         MIDDLEWARE_CLASSES=(
             'django.contrib.sessions.middleware.SessionMiddleware',
+            'django.middleware.locale.LocaleMiddleware',
             'django.middleware.common.CommonMiddleware',
             'django.middleware.csrf.CsrfViewMiddleware',
             'django.contrib.auth.middleware.AuthenticationMiddleware',