diff --git a/src/controllers/05-quotation-controller.ts b/src/controllers/05-quotation-controller.ts
index 8dd46ea..4ff523b 100644
--- a/src/controllers/05-quotation-controller.ts
+++ b/src/controllers/05-quotation-controller.ts
@@ -256,7 +256,10 @@ export class QuotationController extends Controller {
         .map((v) => v.workId || [])
         .filter((v, i, a) => a.findIndex((c) => c === v) === i)
         .flat(),
-      service: body.productServiceList.map((v) => v.serviceId || []).flat(),
+      service: body.productServiceList
+        .map((v) => v.serviceId || [])
+        .filter((v, i, a) => a.findIndex((c) => c === v) === i)
+        .flat(),
     };
 
     const [customerBranch, employee, product, work, service] = await prisma.$transaction(