diff --git a/index.src.html b/index.src.html
index e4fadd2d..a25eab1a 100644
--- a/index.src.html
+++ b/index.src.html
@@ -2698,7 +2698,7 @@
 : <dfn method for=EncodedAudioChunk>copyTo(destination)</dfn>
 :: When invoked, run these steps:
     1. If the {{EncodedAudioChunk/[[byte length]]}} of this {{EncodedAudioChunk}} is
-        greater than in |destination|, throw a {{TypeError}}.
+        greater than the [=BufferSource/byte length=] of |destination|, throw a {{TypeError}}.
     2. Copy the {{EncodedAudioChunk/[[internal data]]}} into |destination|.
 
 ### Serialization ###{#encodedaudiochunk-serialization}
@@ -2805,7 +2805,7 @@
 : <dfn method for=EncodedVideoChunk>copyTo(destination)</dfn>
 :: When invoked, run these steps:
     1. If {{EncodedVideoChunk/[[byte length]]}} is greater than
-        the {{EncodedVideoChunk/[[byte length]]}} of |destination|, throw a
+        the [=BufferSource/byte length=] of |destination|, throw a
         {{TypeError}}.
     2. Copy the {{EncodedVideoChunk/[[internal data]]}} into |destination|.