diff --git a/pkgs/development/libraries/java/httpunit/builder.sh b/pkgs/development/libraries/java/httpunit/builder.sh
deleted file mode 100755
index 273850082958..000000000000
--- a/pkgs/development/libraries/java/httpunit/builder.sh
+++ /dev/null
@@ -1,5 +0,0 @@
-source $stdenv/setup
-
-$unzip/bin/unzip $src
-mkdir $out
-mv $name/* $out/
diff --git a/pkgs/development/libraries/java/httpunit/default.nix b/pkgs/development/libraries/java/httpunit/default.nix
index ad276fcdd636..a93a646e21ac 100644
--- a/pkgs/development/libraries/java/httpunit/default.nix
+++ b/pkgs/development/libraries/java/httpunit/default.nix
@@ -1,15 +1,17 @@
-{lib, stdenv, fetchurl, unzip} :
+{ lib, stdenv, fetchurl }:
 
-stdenv.mkDerivation {
-  name = "httpunit-1.7";
-  builder = ./builder.sh;
+stdenv.mkDerivation rec {
+  pname = "httpunit";
+  version = "1.7";
 
   src = fetchurl {
-    url = "mirror://sourceforge/httpunit/httpunit-1.7.zip";
+    url = "mirror://sourceforge/httpunit/httpunit-${version}.zip";
     sha256 = "09gnayqgizd8cjqayvdpkxrc69ipyxawc96aznfrgdhdiwv8l5zf";
   };
 
-  inherit unzip;
+  buildCommand = ''
+    cp ./* $out
+  '';
 
   meta = with lib; {
     homepage = "http://httpunit.sourceforge.net";