diff --git a/pkgs/development/ocaml-modules/cstruct/sexp.nix b/pkgs/development/ocaml-modules/cstruct/sexp.nix
index d4b311181d5..d0df442013f 100644
--- a/pkgs/development/ocaml-modules/cstruct/sexp.nix
+++ b/pkgs/development/ocaml-modules/cstruct/sexp.nix
@@ -1,4 +1,4 @@
-{ lib, buildDunePackage, alcotest, cstruct, sexplib }:
+{ lib, buildDunePackage, ocaml, alcotest, cstruct, sexplib }:
 
 if !lib.versionAtLeast (cstruct.version or "1") "3"
 then cstruct
@@ -8,7 +8,7 @@ buildDunePackage rec {
 	pname = "cstruct-sexp";
 	inherit (cstruct) version src meta;
 
-	doCheck = true;
+	doCheck = lib.versionAtLeast ocaml.version "4.03";
 	checkInputs = lib.optional doCheck alcotest;
 
 	propagatedBuildInputs = [ cstruct sexplib ];