diff --git a/src/website/pdf.ts b/src/website/pdf.ts
index 766c450..db114f6 100644
--- a/src/website/pdf.ts
+++ b/src/website/pdf.ts
@@ -174,5 +174,5 @@ export async function downloadVocaQuiz(levels: number[], day: number) {
     levels.includes(chunk.level) && chunk.day === day
   ).flatMap((chunk) => chunk.voca_list);
   const bufferPdf = await makePdf(shuffle(voca_list));
-  downloadBuffer(bufferPdf, "voca.pdf");
+  downloadBuffer(bufferPdf, `voca-${day}-${levels.join(",")}.pdf`);
 }