diff --git a/collects/typed-racket/scribblings/guide/optimization.scrbl b/collects/typed-racket/scribblings/guide/optimization.scrbl
index d34ca0ac..8a4f6a83 100644
--- a/collects/typed-racket/scribblings/guide/optimization.scrbl
+++ b/collects/typed-racket/scribblings/guide/optimization.scrbl
@@ -159,7 +159,7 @@ preferable to vectors. Typed Racket can optimize struct access in all
 cases.
 
 
-@subsection{Optimization Coaching}
+@subsection[#:tag "optimization-coach"]{Optimization Coaching}
 
 Typed Racket provides optimization coaching support to help you get the
 most of its optimizer.