diff --git a/src/_zkapauthorizer/tests/test_storage_server.py b/src/_zkapauthorizer/tests/test_storage_server.py
index 40500cb142581eff203eeb0d002ac1cd8e013fb6..c00b4a9e04399f82b89069e5986e90c0ba6baf6e 100644
--- a/src/_zkapauthorizer/tests/test_storage_server.py
+++ b/src/_zkapauthorizer/tests/test_storage_server.py
@@ -28,10 +28,6 @@ from random import (
     shuffle,
 )
 
-from unittest import (
-    skipIf,
-)
-
 from testtools import (
     TestCase,
 )
@@ -68,6 +64,9 @@ from foolscap.referenceable import (
     LocalReferenceable,
 )
 
+from .common import (
+    skipIf,
+)
 from .privacypass import (
     make_passes,
 )