diff --git a/tests/test_register_function.py b/tests/test_register_function.py
index 06f485768..19af0b627 100644
--- a/tests/test_register_function.py
+++ b/tests/test_register_function.py
@@ -1,3 +1,4 @@
+# flake8: noqa
 import pytest
 import sys
 from unittest.mock import MagicMock