diff --git a/tests/unit/domain/test_preset_bgm.py b/tests/unit/domain/test_preset_bgm.py
index 41efc3a8e..c1b5b3e00 100755
--- a/tests/unit/domain/test_preset_bgm.py
+++ b/tests/unit/domain/test_preset_bgm.py
@@ -3,7 +3,6 @@
 from dataclasses import FrozenInstanceError
 
 import pytest
-
 from domain.preset_bgm import (
     BGM_STYLES,
     PRESET_BGM_LIBRARY,