diff --git a/pkgs/development/interpreters/eff/default.nix b/pkgs/development/interpreters/eff/default.nix
index c848ebc6047..cfd3bbbda4c 100644
--- a/pkgs/development/interpreters/eff/default.nix
+++ b/pkgs/development/interpreters/eff/default.nix
@@ -14,6 +14,10 @@ stdenv.mkDerivation {
     sha256 = "1fslfj5d7fhj3f7kh558b8mk5wllwyq4rnhfkyd96fpy144sdcka";
   };
 
+  postPatch = ''
+    substituteInPlace setup.ml --replace js_of_ocaml.ocamlbuild js_of_ocaml-ocamlbuild
+  '';
+
   buildInputs = [ which ] ++ (with ocamlPackages; [
     ocaml findlib ocamlbuild menhir js_of_ocaml js_of_ocaml-ocamlbuild
   ]);