diff --git a/book/source/08-signing_components.md b/book/source/08-signing_components.md
index a27dafe..9972bb4 100644
--- a/book/source/08-signing_components.md
+++ b/book/source/08-signing_components.md
@@ -153,7 +153,7 @@ Linking a User ID to an OpenPGP certificate
 
 The signatures that bind subkeys and identity components to a certificate serve dual purposes: linking components to the certificate and adding metadata to components.
 
-Unlike subkeys and User IDs, the primary key of a certificate doesn't require a linking signature since it serves as the central anchor of the certificate.
+Unlike subkeys and identities, the primary key of a certificate doesn't require a linking signature since it serves as the central anchor of the certificate.
 
 Metadata can be added to the primary key via two mechanisms: