diff --git a/tests/unit/test_analytics.py b/tests/unit/test_analytics.py
index e48e4972d..b54b8132e 100644
--- a/tests/unit/test_analytics.py
+++ b/tests/unit/test_analytics.py
@@ -8,6 +8,9 @@ from dvc.utils.compat import builtin_str, str
 
 @pytest.fixture
 def tmp_global_config(tmp_path):
+    """
+    Fixture to prevent modifying the actual global config
+    """
     with mock.patch(
         "dvc.config.Config.get_global_config_dir", return_value=tmp_path
     ):