diff --git a/settings.py b/settings.py
index 6aef7db1c..10ddc9f83 100644
--- a/settings.py
+++ b/settings.py
@@ -117,7 +117,7 @@ MIDDLEWARE_CLASSES = (
 
 AUTHENTICATION_BACKENDS = (
     'oauth2_provider.backends.OAuth2Backend',
-    'django.contrib.auth.backends.ModelBackend',
+    'django.contrib.auth.backends.AllowAllUsersModelBackend'
 )
 
 CORS_ORIGIN_ALLOW_ALL = True