diff --git a/book/source/08-signing_components.md b/book/source/08-signing_components.md
index cfafa7f..e94f00b 100644
--- a/book/source/08-signing_components.md
+++ b/book/source/08-signing_components.md
@@ -190,6 +190,7 @@ In OpenPGP v6, a direct key signature is the [preferred mechanism](https://www.i
 
 In a certificate, one User ID serves as the [*primary* User ID](https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-12.html#name-primary-user-id). The metadata in the binding self-signature on this User ID applies to the primary key of the certificate.
 
+(self-revocations)=
 ### Revocation self-signatures: Invalidating components of a certificate
 
 One important class of self-signatures are revocations.