diff --git a/src/CMSMicroservice.Infrastructure/BackgroundJobs/WeeklyCommissionJob.cs b/src/CMSMicroservice.Infrastructure/BackgroundJobs/WeeklyCommissionJob.cs
index 5c8d740..58d69d9 100644
--- a/src/CMSMicroservice.Infrastructure/BackgroundJobs/WeeklyCommissionJob.cs
+++ b/src/CMSMicroservice.Infrastructure/BackgroundJobs/WeeklyCommissionJob.cs
@@ -236,8 +236,8 @@ public class WeeklyCommissionJob
         var calendar = System.Globalization.CultureInfo.InvariantCulture.Calendar;
         var weekNumber = calendar.GetWeekOfYear(
             date,
-            System.Globalization.CalendarWeekRule.FirstFourDayWeek,
-            DayOfWeek.Monday);
+            System.Globalization.CalendarWeekRule.FirstDay,
+            DayOfWeek.Saturday);
 
         var year = date.Year;
         if (weekNumber >= 52 && date.Month == 1)