diff --git a/bandcamp_downloader.user.js b/bandcamp_downloader.user.js
index 54c0efe..5e3e5ef 100644
--- a/bandcamp_downloader.user.js
+++ b/bandcamp_downloader.user.js
@@ -226,7 +226,7 @@ unsafeWindow.GM_download = GM_download;
 
     function urlToPromise(url) {
         return new Promise((resolve, reject) => {
-            GM.xmlHttpRequest({
+            GM_xmlhttpRequest({
                 method: "GET", url: url, responseType: "blob", onload: (response) => {
                     console.debug("fetched song", url, response.response);
                     resolve(response.response);