diff --git a/app/attachment/[id]/route.tsx b/app/attachment/[id]/route.tsx
index 4bb82d2..b153845 100644
--- a/app/attachment/[id]/route.tsx
+++ b/app/attachment/[id]/route.tsx
@@ -4,7 +4,7 @@ import { notFound } from 'next/navigation';
 export async function GET(request: Request, { params:{ id } }: { params: { id:string } }) {
     const [locationID, billID] = id.split('-');
 
-    const [location, bill] = await fetchBillById(locationID, billID) ? [];
+    const [location, bill] = await fetchBillById(locationID, billID) ?? [];
 
     if(!bill?.attachment) {
         notFound();