diff --git a/pkgs/development/ocaml-modules/http/default.nix b/pkgs/development/ocaml-modules/http/default.nix
index f25a6f97b39..b9b530ac599 100644
--- a/pkgs/development/ocaml-modules/http/default.nix
+++ b/pkgs/development/ocaml-modules/http/default.nix
@@ -1,5 +1,9 @@
 {stdenv, fetchurl, ocaml_pcre, ocamlnet, ocaml, findlib, camlp4}:
 
+if stdenv.lib.versionAtLeast ocaml.version "4.06"
+then throw "ocaml-http is not available for OCaml ${ocaml.version}"
+else
+
 stdenv.mkDerivation {
   name = "ocaml-http-0.1.5";