diff --git a/oslo_context/tests/test_context.py b/oslo_context/tests/test_context.py
index 5c0b1d9..098d176 100644
--- a/oslo_context/tests/test_context.py
+++ b/oslo_context/tests/test_context.py
@@ -492,7 +492,10 @@ class ContextTest(test_base.BaseTestCase):
         self.assertEqual(show_deleted, d['show_deleted'])
         self.assertEqual(request_id, d['request_id'])
         self.assertEqual(resource_uuid, d['resource_uuid'])
-        user_identity = f"{user_id} {project_id} {domain_id} {user_domain_id} {project_domain_id}"
+        user_identity = (
+            f"{user_id} {project_id} {domain_id} {user_domain_id} "
+            f"{project_domain_id}"
+        )
         self.assertEqual(user_identity, d['user_identity'])
         self.assertEqual([], d['roles'])
 
diff --git a/pyproject.toml b/pyproject.toml
index b5f81ab..9b1cdee 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,7 +45,7 @@ quote-style = "preserve"
 docstring-code-format = true
 
 [tool.ruff.lint]
-select = ["E4", "E7", "E9", "F", "S", "UP"]
+select = ["E4", "E5", "E7", "E9", "F", "S", "UP"]
 
 [tool.ruff.lint.per-file-ignores]
 "oslo_context/tests/*" = ["S"]