diff --git a/docs/spec/auth/token.md b/docs/spec/auth/token.md
index 2c1048ba..cdee7845 100644
--- a/docs/spec/auth/token.md
+++ b/docs/spec/auth/token.md
@@ -115,7 +115,7 @@ Defines getting a bearer and refresh token using the token endpoint.
         to be registered with the authorization server but should be set to a
         meaningful value in order to allow auditing keys created by unregistered
         clients. Accepted syntax is defined in
-        [RFC6749 Appendix A.1](https://tools.ietf.org/html/rfc6749#appendix-A.1).
+        <a href="https://tools.ietf.org/html/rfc6749#appendix-A.1" rel="noopener noreferrer nofollow" target="_blank">RFC6749 Appendix A.1</a>.
     </dd>
     <dt>
         <code>scope</code>