diff --git a/profiler/precheck/common/constant.py b/profiler/precheck/common/constant.py
index 181e6ce80e3b14c661e65021d74a8f7d5e1c6006..c20d838a9f846b25e005165bb186710cc7c28709 100644
--- a/profiler/precheck/common/constant.py
+++ b/profiler/precheck/common/constant.py
@@ -37,3 +37,4 @@ class TimeConstant:
     CHINA_OFFSET = timedelta(hours=8)
     CHINA_TIMEZONE = timezone(CHINA_OFFSET, name='Asia/Shanghai')
     MS_TO_S = 1 / 1000  # Milliseconds to seconds conversion factor
+