diff --git a/tests/xapian_settings.py b/tests/xapian_settings.py
index 516106a..84303a3 100755
--- a/tests/xapian_settings.py
+++ b/tests/xapian_settings.py
@@ -2,6 +2,8 @@ import os
 from .settings import *
 
 INSTALLED_APPS = [
+    'django.contrib.auth',
+    'django.contrib.admin',
     'django.contrib.contenttypes',
     'test_haystack.core',
     'test_haystack.xapian_tests',