diff --git a/specification/client_server_api.rst b/specification/client_server_api.rst
index 9f942c94..8988acb4 100644
--- a/specification/client_server_api.rst
+++ b/specification/client_server_api.rst
@@ -365,6 +365,8 @@ Old V1 API docs: |register|_
 Fallback
 ++++++++
 
+.. _sect:login_fallback:
+
 If a client does not recognize any or all login flows it can use the fallback
 login API::