diff --git a/tests/trainer/test_trainer.py b/tests/trainer/test_trainer.py
index 2466aef99601d7..16de00caa214a6 100644
--- a/tests/trainer/test_trainer.py
+++ b/tests/trainer/test_trainer.py
@@ -993,7 +993,6 @@ def setup(self, stage):
 @pytest.fixture
 def no_local_file_ops(monkeypatch):
     monkeypatch.delattr(os.path, "exists")
-    monkeypatch.delattr(os.path, "isdir")
 
 
 def test_trainer_ensure_no_local_only_file_ops(tmpdir, monkeypatch, no_local_file_ops):