diff --git a/Tests/test_util.py b/Tests/test_util.py
index 4dfc6ffef..08e9c1665 100644
--- a/Tests/test_util.py
+++ b/Tests/test_util.py
@@ -1,4 +1,4 @@
-from .helper import PillowTestCase
+from .helper import unittest, PillowTestCase
 
 from PIL import _util