1 files changed, 1 insertions, 1 deletions
diff --git a/toolkit/content/tests/widgets/test_videocontrols_video_noaudio.html b/toolkit/content/tests/widgets/test_videocontrols_video_noaudio.html
index bfc8018466..99d5bdad01 100644
--- a/toolkit/content/tests/widgets/test_videocontrols_video_noaudio.html
+++ b/toolkit/content/tests/widgets/test_videocontrols_video_noaudio.html
@@ -23,7 +23,7 @@
   add_task(async function setup() {
     await SpecialPowers.pushPrefEnv({"set": [["media.cache_size", 40000]]});
     await new Promise(resolve => {
-      video.src = "video.ogg";
+      video.src = "video.webm";
       video.addEventListener("loadedmetadata", () => SimpleTest.executeSoon(resolve));
     });
   });