diff --git a/tests/unit/command/test_debug.py b/tests/unit/command/test_debug.py
index 6de3c24f2..b97c4499b 100644
--- a/tests/unit/command/test_debug.py
+++ b/tests/unit/command/test_debug.py
@@ -17,22 +17,3 @@ def test_viztracer(tmp_dir, dvc, mocker):
     assert main(["status", "--viztracer-depth", "2"]) == 0
     args = viztracer_profile.call_args[1]
     assert args["max_stack_depth"] == 2
-
-
-def test_viztracer_internal(tmp_dir, dvc, mocker):
-    import sys
-
-    viztracer = mocker.MagicMock()
-    sys.modules["viztracer"] = viztracer
-    from dvc import _debug
-
-    profile = mocker.spy(_debug, "viztracer_profile")
-    tracer = viztracer.VizTracer.return_value
-    assert main(["status", "--viztracer"]) == 0
-
-    args = viztracer.VizTracer.call_args[1]
-    assert args["max_stack_depth"] == -1
-
-    tracer.start.assert_called_once()
-    tracer.stop.assert_called_once()
-    tracer.save.assert_called_once_with(profile.call_args[1]["path"]())