diff --git a/draft-ietf-httpbis-origin-frame.md b/draft-ietf-httpbis-origin-frame.md
index a48644150..1a9729160 100644
--- a/draft-ietf-httpbis-origin-frame.md
+++ b/draft-ietf-httpbis-origin-frame.md
@@ -67,8 +67,10 @@ latency associated with some DNS lookups.
 ## Notational Conventions
 
 The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT",
-"RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in
-{{RFC2119}}.
+"RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted
+as described in BCP 14 {{!RFC2119}} {{!RFC8174}} when, and only when, they appear in all
+capitals, as shown here.
+
 
 # The ORIGIN HTTP/2 Frame