diff --git a/src/usexp/usexp.mli b/src/usexp/usexp.mli
index ec79fb5a..79792ced 100644
--- a/src/usexp/usexp.mli
+++ b/src/usexp/usexp.mli
@@ -4,8 +4,6 @@
 
 module Atom : sig
   type t = private A of string [@@unboxed]
-  (** Acceptable atoms are composed of chars in the range ['!' .. '~'] excluding
-      [' ' '"' '(' ')' ';' '\\'], and must be nonempty. *)
 
   type syntax = Jbuild | Dune