diff --git a/pkgs/development/tools/ocaml/js_of_ocaml/Makefile.conf.diff b/pkgs/development/tools/ocaml/js_of_ocaml/Makefile.conf.diff
new file mode 100644
index 00000000000..ee39855fec9
--- /dev/null
+++ b/pkgs/development/tools/ocaml/js_of_ocaml/Makefile.conf.diff
@@ -0,0 +1,10 @@
+--- old/Makefile.conf	2014-05-19 16:53:09.263564921 +0200
++++ new/Makefile.conf	2014-05-19 16:53:42.213152994 +0200
+@@ -1,6 +1,6 @@
+ 
+ # Where binaries are installed:
+-BINDIR := /usr/local/bin
++BINDIR := $(out)/bin
+ 
+ ####
+ 
diff --git a/pkgs/development/tools/ocaml/js_of_ocaml/default.nix b/pkgs/development/tools/ocaml/js_of_ocaml/default.nix
new file mode 100644
index 00000000000..a7167d0c226
--- /dev/null
+++ b/pkgs/development/tools/ocaml/js_of_ocaml/default.nix
@@ -0,0 +1,28 @@
+{stdenv, fetchurl, ocaml, findlib, ocaml_lwt, menhir, ocsigen_deriving}:
+
+stdenv.mkDerivation {
+  name = "js_of_ocaml";
+  src = fetchurl {
+    url = https://github.com/ocsigen/js_of_ocaml/archive/2.2.tar.gz;
+    sha256 = "1cp81gpvyxgvzxg0vzyl8aa2zvcixp6m433w8zjifrg6vb7lhp97";
+    };
+  
+  buildInputs = [ocaml findlib ocaml_lwt menhir ocsigen_deriving];
+
+  patches = [ ./Makefile.conf.diff ];  
+
+  createFindlibDestdir = true;
+
+
+  meta =  {
+    homepage = http://ocsigen.org/js_of_ocaml/;
+    description = "Compiler of OCaml bytecode to Javascript. It makes it possible to run Ocaml programs in a Web browser";
+    license = "LGPL";
+    platforms = ocaml.meta.platforms;
+    maintainers = [
+      stdenv.lib.maintainers.gal_bolle
+    ];
+  };
+
+
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index e29f01ef042..f0e223b1288 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3337,6 +3337,8 @@ let
 
     gmetadom = callPackage ../development/ocaml-modules/gmetadom { };
 
+    js_of_ocaml = callPackage ../development/tools/ocaml/js_of_ocaml { };
+
     lablgl = callPackage ../development/ocaml-modules/lablgl { };
 
     lablgtk = callPackage ../development/ocaml-modules/lablgtk {