diff --git a/tests/unit/remote/test_remote_dir.py b/tests/unit/remote/test_remote_dir.py
index f1e776760..b9296c824 100644
--- a/tests/unit/remote/test_remote_dir.py
+++ b/tests/unit/remote/test_remote_dir.py
@@ -1,9 +1,8 @@
 # -*- coding: utf-8 -*-
 import pytest
 import os
-
 from dvc.remote.s3 import RemoteS3
-
+from dvc.utils import walk_files
 from tests.remotes import GCP, S3Mocked
 
 remotes = [GCP, S3Mocked]
@@ -145,8 +144,12 @@ def test_download_dir(remote, tmpdir):
     assert len(list(walk_files(path, None))) == 7
     assert (data_dir / "alice").read_text(encoding="utf-8") == "alice"
     assert (data_dir / "alpha").read_text(encoding="utf-8") == "alpha"
-    assert (data_dir / "subdir-file.txt").read_text(encoding="utf-8") == "subdir"
+    assert (data_dir / "subdir-file.txt").read_text(
+        encoding="utf-8"
+    ) == "subdir"
     assert (data_dir / "subdir" / "1").read_text(encoding="utf-8") == "1"
     assert (data_dir / "subdir" / "2").read_text(encoding="utf-8") == "2"
     assert (data_dir / "subdir" / "3").read_text(encoding="utf-8") == "3"
-    assert (data_dir / "subdir" / "empty_file").read_text(encoding="utf-8") == ""
+    assert (data_dir / "subdir" / "empty_file").read_text(
+        encoding="utf-8"
+    ) == ""