diff --git a/functions/proxy.js b/functions/proxy.js
index f2b0640d..eba632cf 100644
--- a/functions/proxy.js
+++ b/functions/proxy.js
@@ -27,7 +27,7 @@ async function fetchProxy(request) {
     } else {
         let method = request.method;
         const header = JSON.parse(decodeURIComponent(request.headers.get('risu-header') ?? 'null')) ?? request.headers
-        let requestHeaders = new Headers(request.headers);
+        let requestHeaders = new Headers(header);
 
         let originalResponse = await fetch(urlParam, {
             method: method,