diff --git a/src/controllers/SalaryPeriodController.ts b/src/controllers/SalaryPeriodController.ts
index 19ccedd..57b3a30 100644
--- a/src/controllers/SalaryPeriodController.ts
+++ b/src/controllers/SalaryPeriodController.ts
@@ -2276,7 +2276,7 @@ export class SalaryPeriodController extends Controller {
     if (chk_period) {
       throw new HttpError(
         HttpStatusCode.NOT_FOUND,
-        "ประเภทผังปี " + (requestBody.effectiveDate.getFullYear() + 543) + " ซ้ำ",
+        "ประเภทผังปี " + (requestBody.year + 543) + " ซ้ำ",
       );
     }
     const beforeChk_SalaryPeriod = structuredClone(chk_SalaryPeriod);