diff --git a/tests/test_dereference.py b/tests/test_dereference.py
index 64ddf09b..120b1a26 100644
--- a/tests/test_dereference.py
+++ b/tests/test_dereference.py
@@ -1,6 +1,8 @@
 from __future__ import with_statement
 import unittest
 
+from bson import DBRef
+
 from mongoengine import *
 from mongoengine.connection import get_db
 from mongoengine.tests import query_counter