diff --git a/tests/test_blackd.py b/tests/test_blackd.py
index 4e42315129f..5b6461f7685 100644
--- a/tests/test_blackd.py
+++ b/tests/test_blackd.py
@@ -23,7 +23,6 @@
     try:
         from aiohttp.test_utils import unittest_run_loop
     except ImportError:
-
         # unittest_run_loop is unnecessary and a no-op since aiohttp 3.8, and
         # aiohttp 4 removed it. To maintain compatibility we can make our own
         # no-op decorator.