diff --git a/index.src.html b/index.src.html
index 49e76b43..2da266df 100644
--- a/index.src.html
+++ b/index.src.html
@@ -2861,7 +2861,7 @@
[EnforceRange] required unsigned long numberOfFrames;
[EnforceRange] required unsigned long numberOfChannels;
[EnforceRange] required long long timestamp; // microseconds
- required BufferSource data;
+ required AllowSharedBufferSource data;
sequence transfer = [];
};