diff --git a/yuthon_salary/wizard/salary_compute_wizard.py b/yuthon_salary/wizard/salary_compute_wizard.py
index 8885b0bb8..dd3c7956b 100644
--- a/yuthon_salary/wizard/salary_compute_wizard.py
+++ b/yuthon_salary/wizard/salary_compute_wizard.py
@@ -146,7 +146,7 @@ class SalaryComputeWizard(models.Model):
                                 base_value = line.total
                                 if base_value % 1 != 0:
                                     base_value = math.ceil(base_value)
-                                result = base_value * 0.8 * internship_days / days + line.total * work_days / days
+                                result = base_value * 0.8 * internship_days / days + base_value * 0.8 * work_days / days
                             else:
                                 result = line.total * 0.8 * internship_days / days + line.total * work_days / days