diff --git a/pkgs/development/ocaml-modules/ppx_blob/default.nix b/pkgs/development/ocaml-modules/ppx_blob/default.nix
index b6a451848c9a..cc106b70f42e 100644
--- a/pkgs/development/ocaml-modules/ppx_blob/default.nix
+++ b/pkgs/development/ocaml-modules/ppx_blob/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, buildDunePackage, alcotest, ocaml-migrate-parsetree }:
+{ lib, fetchurl, buildDunePackage, alcotest, ocaml-migrate-parsetree }:
 
 buildDunePackage rec {
   pname = "ppx_blob";
@@ -9,10 +9,11 @@ buildDunePackage rec {
     sha256 = "1xmslk1mwdzhy1bydgsjlcb7h544c39hvxa8lywp8w72gaggjl16";
   };
 
-  buildInputs = [ alcotest ocaml-migrate-parsetree ];
+  checkInputs = lib.optional doCheck alcotest;
+  buildInputs = [ ocaml-migrate-parsetree ];
   doCheck = true;
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     homepage = "https://github.com/johnwhitington/ppx_blob";
     description = "OCaml ppx to include binary data from a file as a string";
     license = licenses.unlicense;