diff --git a/pkgs/development/ocaml-modules/ppx_derivers/default.nix b/pkgs/development/ocaml-modules/ppx_derivers/default.nix
index 49217781b8ac..ebf19c70ff30 100644
--- a/pkgs/development/ocaml-modules/ppx_derivers/default.nix
+++ b/pkgs/development/ocaml-modules/ppx_derivers/default.nix
@@ -1,6 +1,6 @@
-{ lib, fetchFromGitHub, buildDunePackage, ocaml }:
+{ lib, fetchFromGitHub, buildDunePackage }:
 
-buildDunePackage (rec {
+buildDunePackage rec {
   pname = "ppx_derivers";
   version = "1.2.1";
 
@@ -19,6 +19,4 @@ buildDunePackage (rec {
     maintainers = [ lib.maintainers.vbgl ];
     inherit (src.meta) homepage;
   };
-} // lib.optionalAttrs (!lib.versionAtLeast ocaml.version "4.08") {
-  duneVersion = "1";
-})
+}