--- a/csexp.opam
+++ b/csexp.opam
@@ -32,7 +32,6 @@ bug-reports: "https://github.com/ocaml-d
 depends: [
   "dune" {>= "1.11"}
   "ocaml" {>= "4.02.3"}
-  "result" {>= "1.5"}
 ]
 dev-repo: "git+https://github.com/ocaml-dune/csexp.git"
 build: [
--- a/src/csexp.ml
+++ b/src/csexp.ml
@@ -15,12 +15,6 @@ end
 module Make (Sexp : Sexp) = struct
   open Sexp
 
-  (* This is to keep compatibility with 4.02 without writing [Result.]
-     everywhere *)
-  type ('a, 'b) result = ('a, 'b) Result.result =
-    | Ok of 'a
-    | Error of 'b
-
   module Parser = struct
     exception Parse_error of string
 
@@ -283,9 +277,9 @@ module Make (Sexp : Sexp) = struct
 
     module Monad : Monad
 
-    val read_string : t -> int -> (string, string) Result.t Monad.t
+    val read_string : t -> int -> (string, string) result Monad.t
 
-    val read_char : t -> (char, string) Result.t Monad.t
+    val read_char : t -> (char, string) result Monad.t
   end
 
   module Make_parser (Input : Input) = struct
--- a/src/csexp.mli
+++ b/src/csexp.mli
@@ -33,24 +33,24 @@ module Make (Sexp : Sexp) : sig
       [s]. It is an error for [s] to contain a S-expression followed by more
       data. In case of error, the offset of the error as well as an error
       message is returned. *)
-  val parse_string : string -> (Sexp.t, int * string) Result.t
+  val parse_string : string -> (Sexp.t, int * string) result
 
   (** [parse_string s] parses a sequence of S-expressions encoded in canonical
       form in [s] *)
-  val parse_string_many : string -> (Sexp.t list, int * string) Result.t
+  val parse_string_many : string -> (Sexp.t list, int * string) result
 
   (** Read exactly one canonical S-expressions from the given channel. Note that
       this function never raises [End_of_file]. Instead, it returns [Error]. *)
-  val input : in_channel -> (Sexp.t, string) Result.t
+  val input : in_channel -> (Sexp.t, string) result
 
   (** Same as [input] but returns [Ok None] if the end of file has already been
       reached. If some more characters are available but the end of file is
       reached before reading a complete S-expression, this function returns
       [Error]. *)
-  val input_opt : in_channel -> (Sexp.t option, string) Result.t
+  val input_opt : in_channel -> (Sexp.t option, string) result
 
   (** Read many S-expressions until the end of input is reached. *)
-  val input_many : in_channel -> (Sexp.t list, string) Result.t
+  val input_many : in_channel -> (Sexp.t list, string) result
 
   (** {2 Serialising} *)
 
@@ -352,18 +352,18 @@ module Make (Sexp : Sexp) : sig
       val bind : 'a t -> ('a -> 'b t) -> 'b t
     end
 
-    val read_string : t -> int -> (string, string) Result.t Monad.t
+    val read_string : t -> int -> (string, string) result Monad.t
 
-    val read_char : t -> (char, string) Result.t Monad.t
+    val read_char : t -> (char, string) result Monad.t
   end
   [@@deprecated "Use Parser module instead"]
 
   [@@@warning "-3"]
 
   module Make_parser (Input : Input) : sig
-    val parse : Input.t -> (Sexp.t, string) Result.t Input.Monad.t
+    val parse : Input.t -> (Sexp.t, string) result Input.Monad.t
 
-    val parse_many : Input.t -> (Sexp.t list, string) Result.t Input.Monad.t
+    val parse_many : Input.t -> (Sexp.t list, string) result Input.Monad.t
   end
   [@@deprecated "Use Parser module instead"]
 end