diff --git a/src/controllers/05-quotation-controller.ts b/src/controllers/05-quotation-controller.ts
index 4e6dc05..5a375e5 100644
--- a/src/controllers/05-quotation-controller.ts
+++ b/src/controllers/05-quotation-controller.ts
@@ -264,7 +264,7 @@ export class QuotationController extends Controller {
           }
         : undefined,
       ...whereDateQuery(startDate, endDate),
-      sellerId: sellerId ? sellerId : null,
+      sellerId: sellerId,
     } satisfies Prisma.QuotationWhereInput;
 
     const [result, total] = await prisma.$transaction([