diff --git a/roles/add-build-sshkey/library/test_sshagent_remove_keys.py b/roles/add-build-sshkey/library/test_sshagent_remove_keys.py
index b13dbbd8b..952565d81 100644
--- a/roles/add-build-sshkey/library/test_sshagent_remove_keys.py
+++ b/roles/add-build-sshkey/library/test_sshagent_remove_keys.py
@@ -78,7 +78,7 @@ class TestAgent(testtools.TestCase):
         l = a.list()
         self.assertEqual(2, len(l))
 
-        run('^(?!\(stdin\)).*')  # noqa
+        run(r'^(?!\(stdin\)).*')
 
         l = a.list()
         self.assertEqual(1, len(l))