diff --git a/tracker/test/fielddetail_test.py b/tracker/test/fielddetail_test.py
index f9f27b4..5b31fa3 100644
--- a/tracker/test/fielddetail_test.py
+++ b/tracker/test/fielddetail_test.py
@@ -8,7 +8,10 @@
 from __future__ import division
 from __future__ import absolute_import
 
-import mox
+try:
+  from mox3 import mox
+except ImportError:
+  import mox
 import unittest
 import logging