diff --git a/src/scripts/settings/webSettings.js b/src/scripts/settings/webSettings.js
index e28e0e84ff..80587713bf 100644
--- a/src/scripts/settings/webSettings.js
+++ b/src/scripts/settings/webSettings.js
@@ -1,25 +1,33 @@
 let data;
 
+const urlResolver = document.createElement('a');
+
 // `fetch` with `file:` support
 // Recent browsers seem to support `file` protocol under some conditions.
 // Based on https://github.com/github/fetch/pull/92#issuecomment-174730593
+//          https://github.com/github/fetch/pull/92#issuecomment-512187452
 async function fetchLocal(url, options) {
+    urlResolver.href = url;
+
+    const requestURL = urlResolver.href;
+
     return new Promise((resolve, reject) => {
         const xhr = new XMLHttpRequest;
 
         xhr.onload = () => {
             // `file` protocol has invalid OK status
             let status = xhr.status;
-            if (xhr.responseURL.startsWith('file:') && status === 0) {
+            if (requestURL.startsWith('file:') && status === 0) {
                 status = 200;
             }
 
+            /* eslint-disable-next-line compat/compat */
             resolve(new Response(xhr.responseText, {status: status}));
-        }
+        };
 
         xhr.onerror = () => {
             reject(new TypeError('Local request failed'));
-        }
+        };
 
         xhr.open('GET', url);