diff --git a/testing/talos/talos/tests/devtools/addon/content/pages/custom/console/iframe.html b/testing/talos/talos/tests/devtools/addon/content/pages/custom/console/iframe.html
index 9809c04e3085..895cdbad010c 100644
--- a/testing/talos/talos/tests/devtools/addon/content/pages/custom/console/iframe.html
+++ b/testing/talos/talos/tests/devtools/addon/content/pages/custom/console/iframe.html
@@ -8,16 +8,16 @@
 <script>
 // These query parameters are set in damp.js:customConsole and define the number
 // of console API calls we do in this test.
-let searchParams = new URLSearchParams(location.search);
-let sync = searchParams.get("sync");
-let stream = searchParams.get("stream");
-let async = searchParams.get("async");
+const searchParams = new URLSearchParams(location.search);
+const sync = searchParams.get("sync");
+const stream = searchParams.get("stream");
+const batch = searchParams.get("batch");
 
 // We log complex objects:
 // * a complex js object (window)
 // * a DOM node (body)
 // * a large array
-let bigArray = Array.from({length: 10000}, (_, i) => i);
+const bigArray = Array.from({length: 10000}, (_, i) => i);
 
 // Fill up the console with many logs synchronously during page load.
 for (let i = 0; i < sync; i++) {
@@ -31,20 +31,20 @@ function streamLogs() {
   if (n < stream) {
     requestAnimationFrame(streamLogs);
   } else {
-    requestIdleCallback(asyncLogs);
+    requestIdleCallback(batchLogs);
   }
 }
 requestIdleCallback(streamLogs);
 
-// Finally, we log by small bulk asynchronously slightly more slowly thanks to idle callback
+// Finally, we batch log by small bulk asynchronously slightly more slowly thanks to idle callback
 let x = 0;
-function asyncLogs() {
-  let asyncBulk = 10;
-  for (let i = 0; i < asyncBulk; i++) {
-    console.log("async log", x++, window, document.body, bigArray);
+function batchLogs() {
+  const batchSize = 10;
+  for (let i = 0; i < batchSize; i++) {
+    console.log("batch log", x++, window, document.body, bigArray);
   }
-  if (x < async) {
-    requestIdleCallback(asyncLogs);
+  if (x < batch) {
+    requestIdleCallback(batchLogs);
   }
 }
 </script>
diff --git a/testing/talos/talos/tests/devtools/addon/content/tests/webconsole/custom.js b/testing/talos/talos/tests/devtools/addon/content/tests/webconsole/custom.js
index 11f8ea42b2d4..4a01bb63913d 100644
--- a/testing/talos/talos/tests/devtools/addon/content/tests/webconsole/custom.js
+++ b/testing/talos/talos/tests/devtools/addon/content/tests/webconsole/custom.js
@@ -17,15 +17,15 @@ const TEST_URL = PAGES_BASE_URL + "custom/console/index.html";
 
 module.exports = async function() {
   // These numbers controls the number of console api calls we do in the test
-  let sync = 250,
+  const sync = 250,
     stream = 250,
-    async = 250;
-  let params = `?sync=${sync}&stream=${stream}&async=${async}`;
-  let url = TEST_URL + params;
+    batch = 250;
+  const params = `?sync=${sync}&stream=${stream}&batch=${batch}`;
+  const url = TEST_URL + params;
   await testSetup(url, { disableCache: true });
 
-  let toolbox = await openToolboxAndLog("custom.webconsole", "webconsole");
-  await reloadConsoleAndLog("custom", toolbox, sync + stream + async);
+  const toolbox = await openToolboxAndLog("custom.webconsole", "webconsole");
+  await reloadConsoleAndLog("custom", toolbox, sync + stream + batch);
   await closeToolboxAndLog("custom.webconsole", toolbox);
 
   await testTeardown();