diff --git a/apps/mobile/packages/features/staff/shifts/lib/src/presentation/widgets/shift_details/shift_schedule_summary_section.dart b/apps/mobile/packages/features/staff/shifts/lib/src/presentation/widgets/shift_details/shift_schedule_summary_section.dart
index a8063628..2600c302 100644
--- a/apps/mobile/packages/features/staff/shifts/lib/src/presentation/widgets/shift_details/shift_schedule_summary_section.dart
+++ b/apps/mobile/packages/features/staff/shifts/lib/src/presentation/widgets/shift_details/shift_schedule_summary_section.dart
@@ -106,13 +106,13 @@ class ShiftScheduleSummarySection extends StatelessWidget {
   }
 
   Widget _buildWeekdaySchedule(BuildContext context) {
-    final List<String> weekDays = ['M', 'T', 'W', 'T', 'F', 'S', 'S'];
+    final List<String> weekDays = ['S', 'M', 'T', 'W', 'T', 'F', 'S'];
     final Set<int> activeDays = _getActiveWeekdayIndices();
 
     return Row(
       mainAxisAlignment: MainAxisAlignment.spaceBetween,
       children: List.generate(weekDays.length, (index) {
-        final bool isActive = activeDays.contains(index + 1); // 1-7 (Mon-Sun)
+        final bool isActive = activeDays.contains(index); // 1-7 (Mon-Sun)
         return Container(
           width: 38,
           height: 38,