diff --git a/api/MediaRecorder.json b/api/MediaRecorder.json
index 9db0ca23ddcf59..e1b7c0f7fdbc93 100644
--- a/api/MediaRecorder.json
+++ b/api/MediaRecorder.json
@@ -118,6 +118,7 @@
       },
       "audioBitrateMode": {
         "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/MediaRecorder/audioBitrateMode",
           "spec_url": "https://w3c.github.io/mediacapture-record/#dom-mediarecorder-audiobitratemode",
           "support": {
             "chrome": {