diff --git a/index.src.html b/index.src.html
index ea387602..6664b7c9 100644
--- a/index.src.html
+++ b/index.src.html
@@ -2516,7 +2516,7 @@
 ### Serialization ###{#encodedaudiochunk-serialization}
 : The {{EncodedAudioChunk}} [=serialization steps=] (with |value|, |serialized|,
     and |forStorage|) are:
-:: 1. If |forStorage| is `true`, throw a {{TypeError}}.
+:: 1. If |forStorage| is `true`, throw a {{DataCloneError}}.
     2. For each {{EncodedAudioChunk}} internal slot in |value|, assign the value
         of each internal slot to a field in |serialized| with the same name as
         the internal slot.
@@ -2608,7 +2608,7 @@
 ### Serialization ###{#encodedvideochunk-serialization}
 : The {{EncodedVideoChunk}} [=serialization steps=] (with |value|, |serialized|,
     and |forStorage|) are:
-:: 1. If |forStorage| is `true`, throw a {{TypeError}}.
+:: 1. If |forStorage| is `true`, throw a {{DataCloneError}}.
     2. For each {{EncodedVideoChunk}} internal slot in |value|, assign the value
         of each internal slot to a field in |serialized| with the same name as
         the internal slot.
@@ -2974,7 +2974,7 @@
     |forStorage|) are:
 :: 1. If |value|'s {{platform object/[[Detached]]}} is `true`, throw a
         {{DataCloneError}} {{DOMException}}.
-    2. If |forStorage| is `true`, throw a {{TypeError}}.
+    2. If |forStorage| is `true`, throw a {{DataCloneError}}.
     3. Let |resource| be the [=media resource=] referenced by
             |value|'s {{AudioData/[[resource reference]]}}.
     4. Let |newReference| be a new reference to |resource|.
@@ -4064,7 +4064,7 @@
     |forStorage|) are:
 :: 1. If |value|'s {{platform object/[[Detached]]}} is `true`, throw a
         {{DataCloneError}} {{DOMException}}.
-    2. If |forStorage| is `true`, throw a {{TypeError}}.
+    2. If |forStorage| is `true`, throw a {{DataCloneError}}.
     3. Let |resource| be the [=media resource=] referenced by
             |value|'s {{VideoFrame/[[resource reference]]}}.
     4. Let |newReference| be a new reference to |resource|.