diff --git a/tests/unit/domain/test_speed_config.py b/tests/unit/domain/test_speed_config.py
index 2b4890685..795402d9e 100755
--- a/tests/unit/domain/test_speed_config.py
+++ b/tests/unit/domain/test_speed_config.py
@@ -1,7 +1,6 @@
 """speed_config 调速配置领域模型单测."""
 
 import pytest
-
 from domain.speed_config import (
     DEFAULT_SPEED,
     MAX_SPEED,