diff --git a/yuthon_hr_attendance/models/yuthon_vacation_reports.py b/yuthon_hr_attendance/models/yuthon_vacation_reports.py
index 231ef9187..b49e4aac2 100644
--- a/yuthon_hr_attendance/models/yuthon_vacation_reports.py
+++ b/yuthon_hr_attendance/models/yuthon_vacation_reports.py
@@ -113,7 +113,7 @@ class YuthonVacationReports(models.Model):
         default='not_sent')
 
     @api.depends('vacation_date', 'employee_id')
-    def compute_number_card(self):
+    def _compute_number_card(self):
         for record in self:
             count = 0
             if not record.employee_id or not record.vacation_date: