diff --git a/book/source/04-certificates.md b/book/source/04-certificates.md
index 1a1660a..47cc2f2 100644
--- a/book/source/04-certificates.md
+++ b/book/source/04-certificates.md
@@ -226,7 +226,7 @@ This agility facilitates the easy adoption of new cryptographic primitives into
 
 However, this approach requires that OpenPGP software determine the cryptographic mechanisms that a set of communication partners can handle and prefer. OpenPGP employs several mechanisms for this purpose, which allow negotiation between sender and recipient. It's important to note that OpenPGP is not an online scheme; thus, this negotiation is effectively one-way. The active party interprets the preferences expressed in the certificate of the passive party.
 
-Key negotiation mechanisms in OpenPGP include:
+Negotiation mechanisms in OpenPGP include:
 
 - [Preferred hash algorithms](https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-12.html#preferred-hashes-subpacket)
 - [Preferred symmetric ciphers for v1 SEIPD](https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-12.html#preferred-v1-seipd)