diff --git a/src/authentic2/settings.py b/src/authentic2/settings.py
index f9ef19a65..688ed251f 100644
--- a/src/authentic2/settings.py
+++ b/src/authentic2/settings.py
@@ -46,6 +46,8 @@ MEDIA_URL = '/media/'
 ALLOWED_HOSTS = []
 INTERNAL_IPS = ('127.0.0.1',)
 
+DEFAULT_AUTO_FIELD = 'django.db.models.AutoField'
+
 DATABASES = {
     'default': {
         'ENGINE': 'django.db.backends.postgresql_psycopg2',