diff --git a/README.md b/README.md
index 502ee787ee0903..365aa34e9aca94 100644
--- a/README.md
+++ b/README.md
@@ -46,4 +46,4 @@ For the daring, snapshot builds are available. These builds are created after ea
 | OSX | [tar](http://download.elastic.co/kibana/kibana-snapshot/kibana-5.0.0-alpha5-SNAPSHOT-darwin-x64.tar.gz) |
 | Linux x64 | [tar](http://download.elastic.co/kibana/kibana-snapshot/kibana-5.0.0-alpha5-SNAPSHOT-linux-x64.tar.gz) [deb](https://download.elastic.co/kibana/kibana-snapshot/kibana-5.0.0-alpha5-SNAPSHOT-amd64.deb) [rpm](https://download.elastic.co/kibana/kibana-snapshot/kibana-5.0.0-alpha5-SNAPSHOT-x86_64.rpm) |
 | Linux x86 | [tar](http://download.elastic.co/kibana/kibana-snapshot/kibana-5.0.0-alpha5-SNAPSHOT-linux-x86.tar.gz) [deb](https://download.elastic.co/kibana/kibana-snapshot/kibana-5.0.0-alpha5-SNAPSHOT-i386.deb) [rpm](https://download.elastic.co/kibana/kibana-snapshot/kibana-5.0.0-alpha5-SNAPSHOT-i686.rpm) |
-| Windows | [zip](http://download.elastic.co/kibana/kibana-snapshot/kibana-5.0.0-alpha5-SNAPSHOT-windows.zip) |
+| Windows | [zip](http://download.elastic.co/kibana/kibana-snapshot/kibana-5.0.0-alpha5-SNAPSHOT-windows-x86.zip) |
diff --git a/tasks/build/archives.js b/tasks/build/archives.js
index 1b8f85ffd7f834..9d6ff8163317f4 100644
--- a/tasks/build/archives.js
+++ b/tasks/build/archives.js
@@ -1,38 +1,30 @@
-module.exports = function createPackages(grunt) {
-  let { config } = grunt;
-  let { resolve, relative } = require('path');
-  let { execFile } = require('child_process');
-  let { all, fromNode } = require('bluebird');
+import { execFile } from 'child_process';
+import { all, fromNode } from 'bluebird';
 
-  const targetDir = config.get('target');
-  let buildPath = resolve(config.get('root'), 'build');
-  let exec = async (cmd, args) => {
-    grunt.log.writeln(` > ${cmd} ${args.join(' ')}`);
-    await fromNode(cb => execFile(cmd, args, { cwd: buildPath }, cb));
-  };
+export default (grunt) => {
+  const { config, log } = grunt;
 
+  const cwd = config.get('buildDir');
+  const targetDir = config.get('target');
 
-  let archives = async (platform) => {
-    // kibana.tar.gz
-    await exec('tar', ['-zchf', relative(buildPath, platform.tarPath), platform.buildName]);
+  async function exec(cmd, args) {
+    log.writeln(` > ${cmd} ${args.join(' ')}`);
+    await fromNode(cb => execFile(cmd, args, { cwd }, cb));
+  };
 
-    // kibana.zip
-    if (/windows/.test(platform.name)) {
-      await exec('zip', ['-rq', '-ll', relative(buildPath, platform.zipPath), platform.buildName]);
+  async function archives({ name, buildName, zipPath, tarPath }) {
+    if (/windows/.test(name)) {
+      await exec('zip', ['-rq', '-ll', zipPath, buildName]);
     } else {
-      await exec('zip', ['-rq', relative(buildPath, platform.zipPath), platform.buildName]);
+      await exec('tar', ['-zchf', tarPath, buildName]);
     }
   };
 
   grunt.registerTask('_build:archives', function () {
+    grunt.file.mkdir(targetDir);
 
     all(
-      grunt.config.get('platforms')
-      .map(async platform => {
-
-        grunt.file.mkdir(targetDir);
-        await archives(platform);
-      })
+      config.get('platforms').map(async platform => await archives(platform))
     )
     .nodeify(this.async());
 
diff --git a/tasks/build/download_node_builds.js b/tasks/build/download_node_builds.js
index f3938549aa4e13..cb74b55cec4466 100644
--- a/tasks/build/download_node_builds.js
+++ b/tasks/build/download_node_builds.js
@@ -40,7 +40,7 @@ module.exports = function (grunt) {
     platform.downloadPromise = (async function () {
       grunt.file.mkdir(downloadDir);
 
-      if (platform.name === 'windows') {
+      if (platform.win) {
         await fromNode(cb => {
           resp
           .pipe(createWriteStream(resolve(downloadDir, 'node.exe')))
diff --git a/tasks/config/platforms.js b/tasks/config/platforms.js
index aff25a263b026d..ea80654215f516 100644
--- a/tasks/config/platforms.js
+++ b/tasks/config/platforms.js
@@ -10,9 +10,9 @@ module.exports = function (grunt) {
     'darwin-x64',
     'linux-x64',
     'linux-x86',
-    'windows'
+    'windows-x86'
   ].map(function (name) {
-    let win = name === 'windows';
+    let win = name === 'windows-x86';
 
     let nodeUrl = win ? `${baseUri}/win-x86/node.exe` : `${baseUri}/node-v${nodeVersion}-${name}.tar.gz`;
     let nodeDir = resolve(rootPath, `.node_binaries/${nodeVersion}/${name}`);