diff --git a/pkgs/racket-pkgs/racket-doc/scribblings/inside/procedures.scrbl b/pkgs/racket-pkgs/racket-doc/scribblings/inside/procedures.scrbl
index 7440afae6c..37c77e9a73 100644
--- a/pkgs/racket-pkgs/racket-doc/scribblings/inside/procedures.scrbl
+++ b/pkgs/racket-pkgs/racket-doc/scribblings/inside/procedures.scrbl
@@ -79,7 +79,7 @@ values can be folded to a constant. For example, @racket[+],
 @function[(Scheme_Object* scheme_make_prim
            [Scheme_Prim* prim])]{
 
-Same as @cppi{scheme_make_prim_w_arity}, but the arity (0, -1) and the
+Same as @cppi{scheme_make_prim_w_arity}, but the arity is (0, -1) and the
 name ``UNKNOWN'' is assumed. This function is provided for backward
 compatibility only.}
 
diff --git a/pkgs/racket-pkgs/racket-doc/scribblings/reference/bytes.scrbl b/pkgs/racket-pkgs/racket-doc/scribblings/reference/bytes.scrbl
index 3463dd7418..acd03b1417 100644
--- a/pkgs/racket-pkgs/racket-doc/scribblings/reference/bytes.scrbl
+++ b/pkgs/racket-pkgs/racket-doc/scribblings/reference/bytes.scrbl
@@ -411,7 +411,7 @@ For communication among @tech{places}, the new byte string is allocated in the
 @section{Bytes to Bytes Encoding Conversion}
 
 @defproc[(bytes-open-converter [from-name string?] [to-name string?])
-         bytes-converter?]{
+         (or/c bytes-converter? #f)]{
 
 Produces a @deftech{byte converter} to go from the encoding named by
 @racket[from-name] to the encoding named by @racket[to-name]. If the
diff --git a/pkgs/racket-pkgs/racket-doc/scribblings/reference/chaperones.scrbl b/pkgs/racket-pkgs/racket-doc/scribblings/reference/chaperones.scrbl
index 5f14df1844..245900caae 100644
--- a/pkgs/racket-pkgs/racket-doc/scribblings/reference/chaperones.scrbl
+++ b/pkgs/racket-pkgs/racket-doc/scribblings/reference/chaperones.scrbl
@@ -716,7 +716,7 @@ chaperones of the original values, @racket[abort-proc] must produce
 the same values or chaperones of the values that it is given, and
 @racket[cc-guard-proc] must produce the same values or chaperones of
 the original result values, and @racket[callcc-chaperone-proc] must
-procedure a procedure that is a chaperone or the same as the given
+produce a procedure that is a chaperone or the same as the given
 procedure.
 
 @examples[