diff --git a/pkgs/racket-pkgs/racket-doc/scribblings/reference/procedures.scrbl b/pkgs/racket-pkgs/racket-doc/scribblings/reference/procedures.scrbl
index 5b6da4b6c2..4bd543a5fc 100644
--- a/pkgs/racket-pkgs/racket-doc/scribblings/reference/procedures.scrbl
+++ b/pkgs/racket-pkgs/racket-doc/scribblings/reference/procedures.scrbl
@@ -3,7 +3,7 @@
 
 @title[#:tag "procedures"]{Procedures}
 
-@defproc[(procedure? [v any/c]) boolean]{ Returns @racket[#t] if
+@defproc[(procedure? [v any/c]) boolean?]{ Returns @racket[#t] if
 @racket[v] is a procedure, @racket[#f] otherwise.}