diff --git a/book/source/glossary.md b/book/source/glossary.md
index 76d7fed..b9e75ca 100644
--- a/book/source/glossary.md
+++ b/book/source/glossary.md
@@ -369,7 +369,7 @@ Owner
     See {term}`Certificate Holder`.
 
 Packet
-    An element in an {term}`OpenPGP Certificate`, which represents {term}`components<Component>` or {term}`signatures<OpenPGP Signature Packet>`.
+    An element in an {term}`OpenPGP Certificate` or {term}`message<OpenPGP Message>`.
 
 Packet Header
     A section of variable length at the beginning of a {term}`Packet`, which encodes for example the {term}`Packet Type ID`. See the relevant [section in the RFC](https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-12.html#name-packet-headers), which explains this section in more detail.