diff --git a/mdbsite/settings.py b/mdbsite/settings.py
index d661ba5..0b91d02 100644
--- a/mdbsite/settings.py
+++ b/mdbsite/settings.py
@@ -23,6 +23,8 @@ SITE_ID = 1
 USE_I18N = True
 USE_L10N = True
 
+DEFAULT_AUTO_FIELD = 'django.db.models.AutoField'
+
 MEDIA_ROOT = os.path.join(BASE_DIR, 'media')
 MEDIA_URL = '/media/'
 ADMIN_MEDIA_PREFIX = '/media/'