diff --git a/yuthon_salary/wizard/salary_compute_wizard.py b/yuthon_salary/wizard/salary_compute_wizard.py
index 27a073a9e..cd27a4e49 100644
--- a/yuthon_salary/wizard/salary_compute_wizard.py
+++ b/yuthon_salary/wizard/salary_compute_wizard.py
@@ -109,7 +109,7 @@ class SalaryComputeWizard(models.Model):
                         for line in internship_id.line_ids:
                             if line.name in target_names:
                                 result = line.total * 0.8
-                                line.total = result
+                                line.write({'total': result})
                 elif contract_end_date.year == end_date.year and contract_end_date.month == end_date.month:
                     leave_days = self._create_leave_record(start_date, end_date)
                     days = leave_days.number_of_days
@@ -128,7 +128,7 @@ class SalaryComputeWizard(models.Model):
                         for line in internship_id.line_ids:
                             if line.name in target_names:
                                 result = line.total * 0.8 * internship_days / days + line.total * 0.8 * work_days / days
-                                line.total = result
+                                line.write({'total': result})
 
     def _get_chinese_month(self, month):
         chinese_months = ['一月', '二月', '三月', '四月', '五月', '六月', '七月', '八月', '九月', '十月', '十一月', '十二月']