diff --git a/src/about.html b/src/about.html
index 9e367503e..71a321ec7 100644
--- a/src/about.html
+++ b/src/about.html
@@ -42,7 +42,7 @@
     </div>
     <hr>
     <div id="dev">
-        <button id="sfneBenchmark">Benchmark static filtering engine</button>
+        <button id="sfneBenchmark" type="button">Benchmark static filtering engine</button>
         <div id="sfneBenchmarkResult"></div>
     </div>
 </div>
diff --git a/src/js/about.js b/src/js/about.js
index b2e3d98c4..212abae8c 100644
--- a/src/js/about.js
+++ b/src/js/about.js
@@ -43,13 +43,14 @@
 
     document.getElementById('dev').classList.add('enabled');
 
-    const sfneBenchmark = async ( ) => {
-        const result = await vAPI.messaging.send('dashboard', {
+    document.getElementById('sfneBenchmark').addEventListener('click', ev => {
+        const button = ev.target;
+        button.setAttribute('disabled', '');
+        vAPI.messaging.send('dashboard', {
             what: 'sfneBenchmark',
+        }).then(result => {
+            document.getElementById('sfneBenchmarkResult').textContent = result;
+            button.removeAttribute('disabled');
         });
-        document.getElementById('sfneBenchmarkResult').textContent = result;
-    };
-    document.getElementById('sfneBenchmark').addEventListener('click', ( ) => {
-        sfneBenchmark();
     });
 })();