diff --git a/refunds/settings.py b/refunds/settings.py
index aeb8323..ae56e90 100644
--- a/refunds/settings.py
+++ b/refunds/settings.py
@@ -68,7 +68,7 @@ INSTALLED_APPS = [
     'django.contrib.staticfiles',
 ]
 
-MIDDLEWARE_CLASSES = [
+MIDDLEWARE = [
     'django.middleware.security.SecurityMiddleware',
     'django.contrib.sessions.middleware.SessionMiddleware',
     'django.middleware.common.CommonMiddleware',