diff --git a/testing/test_unittest.py b/testing/test_unittest.py
index eccb464da..0514ad6d3 100644
--- a/testing/test_unittest.py
+++ b/testing/test_unittest.py
@@ -311,7 +311,7 @@ def test_module_level_pytestmark(testdir):
 
 
 def test_trial_testcase_skip_property(testdir):
-
+    pytest.importorskip('twisted.trial.unittest')
     testpath = testdir.makepyfile("""
         from twisted.trial import unittest
         class MyTestCase(unittest.TestCase):
@@ -337,7 +337,7 @@ def test_trial_testfunction_skip_property(testdir):
 
 
 def test_trial_testcase_todo_property(testdir):
-
+    pytest.importorskip('twisted.trial.unittest')
     testpath = testdir.makepyfile("""
         from twisted.trial import unittest
         class MyTestCase(unittest.TestCase):