diff --git a/auditlog_tests/tests.py b/auditlog_tests/tests.py
index 5945bd5..d991bef 100644
--- a/auditlog_tests/tests.py
+++ b/auditlog_tests/tests.py
@@ -498,8 +498,7 @@ class ManyRelatedModelTest(TestCase):
         self.obj.related.add(self.related)
         log_entry = self.obj.history.first()
         self.assertEqual(
-            log_entry.changes_str,
-            f"related: add {[smart_str(self.related)]}"
+            log_entry.changes_str, f"related: add {[smart_str(self.related)]}"
         )
 
     def test_adding_existing_related_obj(self):