diff --git a/tests/test_unit/test_track_video.py b/tests/test_unit/test_track_video.py
index 92dbb039..25e2ab4f 100644
--- a/tests/test_unit/test_track_video.py
+++ b/tests/test_unit/test_track_video.py
@@ -20,7 +20,7 @@ def mock_args():
         device="cuda",
         gt_path=None,
         save_video=None,
-        run_on_video_dir =None
+        run_on_video_dir=None,
     )