diff --git a/addons/hr_holidays/models/hr_leave_allocation.py b/addons/hr_holidays/models/hr_leave_allocation.py
index 5907cc99b2d..a782311e021 100644
--- a/addons/hr_holidays/models/hr_leave_allocation.py
+++ b/addons/hr_holidays/models/hr_leave_allocation.py
@@ -209,10 +209,15 @@ class HolidaysAllocation(models.Model):
         for allocation in self:
             allocation.number_of_days_display = allocation.number_of_days
 
-    @api.depends('number_of_days', 'holiday_status_id')
+    @api.depends('number_of_days', 'holiday_status_id', 'employee_id', 'holiday_type')
     def _compute_number_of_hours_display(self):
         for allocation in self:
-            allocation.number_of_hours_display = allocation.number_of_days * (allocation.holiday_status_id.company_id.resource_calendar_id.hours_per_day or HOURS_PER_DAY)
+            allocation_calendar = allocation.holiday_status_id.company_id.resource_calendar_id
+            if allocation.holiday_type == 'employee':
+                allocation_calendar = allocation.employee_id.sudo().resource_calendar_id
+
+            allocation.number_of_hours_display = allocation.number_of_days * (allocation_calendar.hours_per_day or HOURS_PER_DAY)
+
 
     @api.depends('number_of_hours_display', 'number_of_days_display')
     def _compute_duration_display(self):