diff --git a/yuthon_hr_attendance/models/card_approval.py b/yuthon_hr_attendance/models/card_approval.py
index 7e2ff567b..996b93f11 100644
--- a/yuthon_hr_attendance/models/card_approval.py
+++ b/yuthon_hr_attendance/models/card_approval.py
@@ -48,7 +48,7 @@ class CardApprovals(models.Model):
                 ('vacation_date', '=', vacation_date),
             ], limit=1)
             if vacation_report:
-                vacation_report.vacation_date()
+                vacation_report._compute_number_card()
                 self.number_cards_replaced = vacation_report.number_card