diff --git a/book/source/06-signatures.md b/book/source/06-signatures.md
index 60cd4d6..2f370e5 100644
--- a/book/source/06-signatures.md
+++ b/book/source/06-signatures.md
@@ -106,7 +106,7 @@ In the OpenPGP protocol, signature subpackets enhance the expressiveness of a si
 Signature subpackets serve as sub-elements within signature packets, providing extra context and meaning to a signature. 
 They are formatted as key-value pairs, where the keys are defined as [subpacket type IDs](https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-12.html#name-signature-subpacket-types-r) by the RFC. The RFC also provides the format and interpretation of the values.
 
-### Examples of signature subpackets:
+### Examples of signature subpackets
 - The [*issuer fingerprint*](https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-12.html#issuer-fingerprint-subpacket) subpacket encodes the fingerprint of the component key that issued the signature.
 - The [*key flags*](https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-12.html#name-key-flags) subpacket defines the capabilities are assigned to a component key within a certificate.