diff --git a/mp3_codec_registration.src.html b/mp3_codec_registration.src.html
index 184ab396..ebc7c2fa 100644
--- a/mp3_codec_registration.src.html
+++ b/mp3_codec_registration.src.html
@@ -52,7 +52,6 @@
 - `"mp3"`
 - `"mp4a.69"`
 - `"mp4a.6B"`
-- `"mp4a.69"`
 
 
 EncodedAudioChunk data {#encodedaudiochunk-data}