diff --git a/rest-api-guidelines/message/content-negotiation.md b/rest-api-guidelines/message/content-negotiation.md
index 4105483..96f9a39 100644
--- a/rest-api-guidelines/message/content-negotiation.md
+++ b/rest-api-guidelines/message/content-negotiation.md
@@ -22,9 +22,9 @@ Content-Type: application/vnd.example.resource+json; version=2.1.3
 ...
 ```
 
-> NOTE: A server that doesn't have the requested representation media type available MUST respond with the HTTP Status Code **406 Not Acceptable**.
+> NOTE: A server that doesn't have the requested representation media type available **MUST** respond with the HTTP Status Code **406 Not Acceptable**.
 >
-> NOTE: A server MAY have multiple choices available and MAY respond with the **300 Multiple Choices** response. In which case client SHOULD choose from the presented choices.
+> NOTE: A server **MAY** have multiple choices available and **MAY** respond with the **300 Multiple Choices** response. In which case client **SHOULD** choose from the presented choices.
 >
 > You can read more about content negotiation at [MDN Content negotiation](https://developer.mozilla.org/en-US/docs/Web/HTTP/Content_negotiation).