diff --git a/pkgs/racket-doc/scribblings/foreign/misc.scrbl b/pkgs/racket-doc/scribblings/foreign/misc.scrbl
index 15ccd2e569..7f0fe66331 100644
--- a/pkgs/racket-doc/scribblings/foreign/misc.scrbl
+++ b/pkgs/racket-doc/scribblings/foreign/misc.scrbl
@@ -11,7 +11,7 @@ using values from @racket[lst] and the given @racket[type].  The
 according to the given @racket[type].}
 
 
-@defproc[(vector->cblock [vec vector?] [type type?]) any]{
+@defproc[(vector->cblock [vec vector?] [type ctype?]) any]{
 
 Like @racket[list->cblock], but for Racket vectors.}