diff --git a/functions/api/uploads/[[id]].ts b/functions/api/uploads/[[id]].ts
index c909418..65adf1b 100644
--- a/functions/api/uploads/[[id]].ts
+++ b/functions/api/uploads/[[id]].ts
@@ -18,8 +18,7 @@ export async function onRequestGet(context: RequestContext) {
 
   return Response.redirect(
     `${unsignedURL}&Signature=${btoa(
-      // @ts-expect-error
-      String.fromCodePoint(...signature),
+      String.fromCodePoint(...new Uint8Array(signature)),
     )
       .replaceAll("+", "-")
       .replaceAll("/", "_")