diff --git a/changelog/64567.fixed.md b/changelog/64567.fixed.md
index 818bfb6f74fc..442d9eda9eb1 100644
--- a/changelog/64567.fixed.md
+++ b/changelog/64567.fixed.md
@@ -1 +1 @@
-Fix flaky test for LazyLoader with isolated mocking of threading.RLock
\ No newline at end of file
+Fix flaky test for LazyLoader with isolated mocking of threading.RLock
diff --git a/tests/unit/test_loader.py b/tests/unit/test_loader.py
index 1f9165d6dc03..ae68653b9920 100644
--- a/tests/unit/test_loader.py
+++ b/tests/unit/test_loader.py
@@ -1717,7 +1717,9 @@ def test_lazyloader_refresh_file_mapping_called_with_lock_at___init__(self):
         lock_mock = MagicMock()
         lock_mock.__enter__ = MagicMock()
         self.LOADER_CLASS._refresh_file_mapping = func_mock
-        with patch.object(self.LOADER_CLASS, "_get_lock", MagicMock(return_value=lock_mock)):
+        with patch.object(
+            self.LOADER_CLASS, "_get_lock", MagicMock(return_value=lock_mock)
+        ):
             loader = self.__init_loader()
         lock_mock.__enter__.assert_called()
         func_mock.assert_called()