diff --git a/doc/draft-ietf-codec-oggopus.xml b/doc/draft-ietf-codec-oggopus.xml
index c6291d2e..aa036482 100644
--- a/doc/draft-ietf-codec-oggopus.xml
+++ b/doc/draft-ietf-codec-oggopus.xml
@@ -2,9 +2,9 @@
 <!DOCTYPE rfc SYSTEM 'rfc2629.dtd' [
 <!ENTITY rfc2119 PUBLIC '' 'https://xml2rfc.tools.ietf.org/tools/xml2rfc/public/rfc/bibxml/reference.RFC.2119.xml'>
 <!ENTITY rfc3533 PUBLIC '' 'https://xml2rfc.tools.ietf.org/tools/xml2rfc/public/rfc/bibxml/reference.RFC.3533.xml'>
-<!ENTITY rfc3534 PUBLIC '' 'https://xml2rfc.tools.ietf.org/tools/xml2rfc/public/rfc/bibxml/reference.RFC.3534.xml'>
 <!ENTITY rfc3629 PUBLIC '' 'https://xml2rfc.tools.ietf.org/tools/xml2rfc/public/rfc/bibxml/reference.RFC.3629.xml'>
 <!ENTITY rfc4732 PUBLIC '' 'https://xml2rfc.tools.ietf.org/tools/xml2rfc/public/rfc/bibxml/reference.RFC.4732.xml'>
+<!ENTITY rfc5334 PUBLIC '' 'https://xml2rfc.tools.ietf.org/tools/xml2rfc/public/rfc/bibxml/reference.RFC.5334.xml'>
 <!ENTITY rfc6381 PUBLIC '' 'https://xml2rfc.tools.ietf.org/tools/xml2rfc/public/rfc/bibxml/reference.RFC.6381.xml'>
 <!ENTITY rfc6716 PUBLIC '' 'https://xml2rfc.tools.ietf.org/tools/xml2rfc/public/rfc/bibxml/reference.RFC.6716.xml'>
 ]>
@@ -1142,9 +1142,6 @@ Elements such as the Ogg page capture pattern and the magic signatures in the
 An "Ogg Opus file" consists of one or more sequentially multiplexed segments,
  each containing exactly one Ogg Opus stream.
 The RECOMMENDED mime-type for Ogg Opus files is "audio/ogg".
-When Opus is concurrently multiplexed with other streams in an Ogg container,
- one SHOULD use one of the "audio/ogg", "video/ogg", or "application/ogg"
- mime-types, as defined in <xref target="RFC3534"/>.
 </t>
 
 <t>
@@ -1162,6 +1159,15 @@ audio/ogg; codecs=opus
 The RECOMMENDED filename extension for Ogg Opus files is '.opus'.
 </t>
 
+<t>
+When Opus is concurrently multiplexed with other streams in an Ogg container,
+ one SHOULD use one of the "audio/ogg", "video/ogg", or "application/ogg"
+ mime-types, as defined in <xref target="RFC5334"/>.
+Such streams are not strictly "Ogg Opus files" as described above,
+ since they contain more than a single Opus stream per sequentially
+ multiplexed segment, e.g. video or multiple audio tracks.
+In such cases the the '.opus' filename extension is NOT RECOMMENDED.
+</t>
 </section>
 
 <section title="IANA Considerations">
@@ -1194,8 +1200,8 @@ The authors agree to grant third parties the irrevocable right to copy, use,
 <references title="Normative References">
  &rfc2119;
  &rfc3533;
- &rfc3534;
  &rfc3629;
+ &rfc5334;
  &rfc6381;
  &rfc6716;