diff --git a/scribblings/functions.scrbl b/scribblings/functions.scrbl
index eb44152..892363a 100644
--- a/scribblings/functions.scrbl
+++ b/scribblings/functions.scrbl
@@ -525,6 +525,7 @@ The input is typically what @racket[read-org-sexp] reads.
 
 @ex[
 (read-org-tbfs "((1 2 1) (1 0 1))")
+(read-org-tbfs "((x y f) (1 2 1) (1 0 1))" #:headers #t)
 ]}
 
 @defproc[(tbf-tabulate* [tbfs (Listof tbf)])