--- a/browser/components/originattributes/test/browser/browser_cache.js
+++ b/browser/components/originattributes/test/browser/browser_cache.js
@@ -156,17 +156,17 @@ async function doTest(aBrowser) {
     let audioTrack = content.document.createElement("track");
 
     // Append the audio and track element into the body, and wait until they're finished.
     await new Promise(resolve => {
       let audioLoaded = false;
       let trackLoaded = false;
 
       let audioListener = () => {
-        audio.removeEventListener("canplaythrough", audioListener);
+        audio.removeEventListener("suspend", audioListener);
 
         audioLoaded = true;
         if (audioLoaded && trackLoaded) {
           resolve();
         }
       };
 
       let trackListener = () => {
@@ -175,17 +175,17 @@ async function doTest(aBrowser) {
         trackLoaded = true;
         if (audioLoaded && trackLoaded) {
           resolve();
         }
       };
 
       // Add the event listeners before everything in case we lose events.
       audioTrack.addEventListener("load", trackListener);
-      audio.addEventListener("canplaythrough", audioListener);
+      audio.addEventListener("suspend", audioListener);
 
       // Assign attributes for the audio element.
       audioSource.setAttribute("src", audioURL + URLSuffix);
       audioSource.setAttribute("type", "audio/ogg");
       audioTrack.setAttribute("src", trackURL);
       audioTrack.setAttribute("kind", "subtitles");
 
       audio.appendChild(audioSource);
@@ -193,22 +193,22 @@ async function doTest(aBrowser) {
       audio.autoplay = true;
 
       content.document.body.appendChild(audio);
     });
 
     // Append the video element into the body, and wait until it's finished.
     await new Promise(resolve => {
       let listener = () => {
-        video.removeEventListener("canplaythrough", listener);
+        video.removeEventListener("suspend", listener);
         resolve();
       };
 
       // Add the event listener before everything in case we lose the event.
-      video.addEventListener("canplaythrough", listener);
+      video.addEventListener("suspend", listener);
 
       // Assign attributes for the video element.
       video.setAttribute("src", videoURL + URLSuffix);
       video.setAttribute("type", "video/ogg");
 
       content.document.body.appendChild(video);
     });
   });