diff --git a/tasks/build/archives.js b/tasks/build/archives.js
index 2639ab86e28fc..ef50854e0d626 100644
--- a/tasks/build/archives.js
+++ b/tasks/build/archives.js
@@ -1,6 +1,6 @@
 module.exports = function createPackages(grunt) {
   let { config } = grunt;
-  let { resolve } = require('path');
+  let { resolve, relative } = require('path');
   let { execFile } = require('child_process');
   let { all, fromNode } = require('bluebird');
 
@@ -13,13 +13,13 @@ module.exports = function createPackages(grunt) {
 
   let archives = async (platform) => {
     // kibana.tar.gz
-    await exec('tar', ['-zchf', platform.tarPath, platform.buildName]);
+    await exec('tar', ['-zchf', relative(buildPath, platform.tarPath), platform.buildName]);
 
     // kibana.zip
     if (/windows/.test(platform.name)) {
-      await exec('zip', ['-rq', '-ll', platform.zipPath, platform.buildName]);
+      await exec('zip', ['-rq', '-ll', relative(buildPath, platform.zipPath), platform.buildName]);
     } else {
-      await exec('zip', ['-rq', platform.zipPath, platform.buildName]);
+      await exec('zip', ['-rq', relative(buildPath, platform.zipPath), platform.buildName]);
     }
   };
 
diff --git a/tasks/build/shasums.js b/tasks/build/shasums.js
index c5dcedeba8f29..b24ccfefecc7a 100644
--- a/tasks/build/shasums.js
+++ b/tasks/build/shasums.js
@@ -1,6 +1,9 @@
 var { promisify } = require('bluebird');
 var readdir = promisify(require('fs').readdir);
 var exec = promisify(require('child_process').exec);
+var platform = require('os').platform();
+var cmd = /^win/.test(platform) ? 'sha1sum ' : 'shasum ';
+
 
 module.exports = function (grunt) {
   grunt.registerTask('_build:shasums', function () {
@@ -11,7 +14,7 @@ module.exports = function (grunt) {
       // only sha the archives
       if (!archive.match(/\.zip$|\.tar.gz$/)) return;
 
-      return exec('shasum ' + archive + ' > ' + archive + '.sha1.txt', {
+      return exec(cmd + archive + ' > ' + archive + '.sha1.txt', {
         cwd: targetDir
       });
     })
diff --git a/tasks/config/run.js b/tasks/config/run.js
index 0d0be286c465c..fa61f23fdd88c 100644
--- a/tasks/config/run.js
+++ b/tasks/config/run.js
@@ -4,6 +4,7 @@ module.exports = function (grunt) {
   let {resolve} = require('path');
   let root = p => resolve(__dirname, '../../', p);
   let binScript =  /^win/.test(platform) ? '.\\bin\\kibana.bat' : './bin/kibana';
+  let buildScript =  /^win/.test(platform) ? '.\\build\\kibana\\bin\\kibana.bat' : './build/kibana/bin/kibana';
   let uiConfig = require(root('test/serverConfig'));
 
   const stdDevArgs = [
@@ -150,7 +151,7 @@ module.exports = function (grunt) {
         ready: /Optimization .+ complete/,
         quiet: true
       },
-      cmd: './build/kibana/bin/kibana',
+      cmd: buildScript,
       args: [
         '--env.name=production',
         '--logging.json=false',