diff --git a/expected-errs.txt b/expected-errs.txt
index 2edda1a24..934e8fe21 100644
--- a/expected-errs.txt
+++ b/expected-errs.txt
@@ -1,7 +1,3 @@
-WARNING: Multiple elements have the same ID 'dom-decodeerrorcallback-error'.
-Deduping, but this ID may not be stable across revisions.
-WARNING: Multiple elements have the same ID 'dom-decodesuccesscallback-decodeddata'.
-Deduping, but this ID may not be stable across revisions.
 LINE: Can't find the 'contextOptions' argument of method 'OfflineAudioContext/constructor(numberOfChannels, length, sampleRate)' in the argumentdef block.
 LINE: Can't find the 'destinationNode' argument of method 'AudioNode/connect(destinationParam, output)' in the argumentdef block.
 LINE: Can't find the 'input' argument of method 'AudioNode/connect(destinationParam, output)' in the argumentdef block.
diff --git a/index.bs b/index.bs
index 7e46660ac..bb557b1fc 100644
--- a/index.bs
+++ b/index.bs
@@ -1212,7 +1212,7 @@ Methods</h4>
 Callback {{DecodeSuccessCallback()}} Parameters</h4>
 
 <dl dfn-type=argument dfn-for="DecodeSuccessCallback()">
-	: <dfn>decodedData</dfn>, of type {{AudioBuffer}}
+	: {{DecodeSuccessCallback/decodedData!!argument}}</dfn>, of type {{AudioBuffer}}
 	:: The AudioBuffer containing the decoded audio data.
 </dl>
 
@@ -1220,7 +1220,7 @@ Callback {{DecodeSuccessCallback()}} Parameters</h4>
 Callback {{DecodeErrorCallback()}} Parameters</h4>
 
 <dl dfn-type=argument dfn-for="DecodeErrorCallback()">
-	: <dfn>error</dfn>, of type {{DOMException}}
+	: {{DecodeErrorCallback/error!!argument}}, of type {{DOMException}}
 	:: The error that occurred while decoding.
 </dl>