diff --git a/apps/wpm/services.py b/apps/wpm/services.py
index 9d30fb10..afa29ef2 100644
--- a/apps/wpm/services.py
+++ b/apps/wpm/services.py
@@ -95,7 +95,7 @@ def make_sflogs(mgroup: Mgroup, start_date: datetime.date, end_date: datetime.da
             start_time = datetime.datetime.combine(current_date, start_time_o)
             end_time = datetime.datetime.combine(current_date, end_time_o)
             # 以下代码是解决跨天排班时生成当天班次缺少的bug
-            if start_time > end_time:
+            if start_time >= end_time:
                 end_time += datetime.timedelta(days=1)
             total_sec = (end_time - start_time).total_seconds()