diff --git a/index.bs b/index.bs
index 4256bb807..5284ff047 100644
--- a/index.bs
+++ b/index.bs
@@ -9881,7 +9881,7 @@ This section is <i>non-normative</i>.
 
 This section contains the substantive changes that have been made to this specification over time.
 
-## Changes since Web Authentication Level 2 [[webauthn-2-20210408]]
+## Changes since Web Authentication Level 2 [[webauthn-2-20210408]] {#changes-since-l2}
 
 - Two authenticatorData flags assigned: 
     - [[#sctn-credential-backup]]