diff --git a/pkgs/racket-pkgs/racket-doc/syntax/scribblings/for-transform.scrbl b/pkgs/racket-pkgs/racket-doc/syntax/scribblings/for-transform.scrbl
index 8f01be8983..1c376542dc 100644
--- a/pkgs/racket-pkgs/racket-doc/syntax/scribblings/for-transform.scrbl
+++ b/pkgs/racket-pkgs/racket-doc/syntax/scribblings/for-transform.scrbl
@@ -1,15 +1,19 @@
 #lang scribble/manual
 @(require (for-label racket/base
-                     racket/sequence))
+                     racket/sequence
+                     syntax/unsafe/for-transform))
 
-@title{@racket[for] Clause Transforms}
+@title{Unsafe @racket[for] Clause Transforms}
 
-@defmodule[syntax/for-transform]{The @racketmodname[syntax/for-transform] module
-provides a helper function that gives access to the sequence transformers 
-defined by @racket[define-sequence-syntax]. This is what the @racket[for] forms
-use and enables faster 
+@defmodule[syntax/unsafe/for-transform]{
+The @racketmodname[syntax/unsafe/for-transform] module provides a helper
+function that gives access to the sequence transformers defined by 
+@racket[define-sequence-syntax]. This is what the @racket[for] forms use and
+enables faster 
 @tech[#:doc '(lib "scribblings/reference/reference.scrbl")]{sequence} traversal
-than what the sequence interface provides.}
+than what the sequence interface provides.
+
+The output may use unsafe operations.}
 
 @defproc[(expand-for-clause [orig-stx syntax?] [clause syntax?]) syntax?]{
 
@@ -29,5 +33,7 @@ Expands a @racket[for] clause of the form @racket[[(x ...) seq-expr]], where
 which can then be spliced into the appropriate iterations. See @racket[:do-in]
 for more information.
 
+The result may use unsafe operations.
+
 The first argument @racket[orig-stx] is used only for reporting syntax errors.
 }
diff --git a/racket/collects/racket/HISTORY.txt b/racket/collects/racket/HISTORY.txt
index 1426de25ad..dce90bc1ab 100644
--- a/racket/collects/racket/HISTORY.txt
+++ b/racket/collects/racket/HISTORY.txt
@@ -2,7 +2,7 @@ Version 5.90.0.9
 Allow hash table chaperones and impersonators to Support efficient
  hash-clear and hash-clear!
 setup/collection-name: added
-syntax/for-transform: added
+syntax/unsafe/for-transform: added
 
 Version 5.90.0.6
 Added path<?, symbol<?
diff --git a/racket/collects/syntax/for-transform.rkt b/racket/collects/syntax/unsafe/for-transform.rkt
similarity index 100%
rename from racket/collects/syntax/for-transform.rkt
rename to racket/collects/syntax/unsafe/for-transform.rkt