diff --git a/apps/wpm/services.py b/apps/wpm/services.py
index f48c6adf..a4c5b11c 100644
--- a/apps/wpm/services.py
+++ b/apps/wpm/services.py
@@ -38,7 +38,10 @@ 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)
             if start_time > end_time:
-                start_time -= datetime.timedelta(days=1)
+                if end_time.hour == 0:
+                    end_time += datetime.timedelta(days=1)
+                else:
+                    start_time -= datetime.timedelta(days=1)
             duration = end_time - start_time
             total_hour = duration.total_seconds() / 3600
             SfLog.objects.get_or_create(mgroup=mgroup, shift=shift, start_time=start_time, defaults={