diff --git a/Gruntfile.js b/Gruntfile.js
index 36ef96c4..9d746526 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -96,7 +96,7 @@ module.exports = function(grunt) {
       'saucelabs-qunit': {
           all: {
               options: {
-                  urls: ["http://127.0.0.1:9999/test/index.html"],
+                  urls: ["http://127.0.0.1:9999/test/index.html?hidepassed"],
                   build: process.env.TRAVIS_JOB_ID,
                   throttled: 3,
                   "max-duration" : 600, // seconds, IE6 is slow
diff --git a/lib/utils.js b/lib/utils.js
index d79e0110..f61c0088 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -3,7 +3,7 @@
 var support = require('./support');
 var base64 = require('./base64');
 var nodejsUtils = require('./nodejsUtils');
-var asap = require('asap');
+var setImmediate = require('core-js/library/fn/set-immediate');
 var external = require("./external");
 
 
@@ -372,7 +372,7 @@ exports.pretty = function(str) {
  * @param {Array} args the arguments to give to the callback.
  */
 exports.delay = function(callback, args, self) {
-    asap(function () {
+    setImmediate(function () {
         callback.apply(self || null, args || []);
     });
 };
diff --git a/package.json b/package.json
index 6f9ca109..1587194f 100644
--- a/package.json
+++ b/package.json
@@ -49,10 +49,10 @@
     "tmp": "0.0.28"
   },
   "dependencies": {
+    "core-js": "~2.3.0",
     "es6-promise": "~3.0.2",
     "pako": "~1.0.0",
-    "readable-stream": "~2.0.6",
-    "asap": "~2.0.3"
+    "readable-stream": "~2.0.6"
   },
   "license": "(MIT OR GPL-3.0)"
 }
diff --git a/test/asserts/stream.js b/test/asserts/stream.js
index d7aec2fc..52f3385a 100644
--- a/test/asserts/stream.js
+++ b/test/asserts/stream.js
@@ -6,8 +6,8 @@ QUnit.module("stream", function () {
 
     QUnit.module("internal");
 
-    test("A stream is pausable", function () {
-        // let's get a stream that generates a lot of chunks
+    test("A stream is pausable", function (assert) {
+        // let's get a stream that generates a lot of chunks (~40)
         var zip = new JSZip();
         var txt = "a text";
         for(var i = 0; i < 10; i++) {
@@ -16,33 +16,37 @@ QUnit.module("stream", function () {
 
         var allowChunks = true;
         var chunkCount = 0;
+        var done = assert.async();
 
         var helper = zip.generateInternalStream({streamFiles:true, type:"binarystring"});
         helper
         .on("data", function () {
             chunkCount++;
-            equal(allowChunks, true, "be sure to get chunks only when allowed");
+            assert.equal(allowChunks, true, "be sure to get chunks only when allowed");
+
+            /*
+             * We stop at ~ half of chunks.
+             * A setTimeout aside this stream is not reliable and can be
+             * triggered *after* the completion of the stream.
+             */
+            if (chunkCount === 20) {
+
+                allowChunks = false;
+                helper.pause();
+                setTimeout(function () {
+                    allowChunks = true;
+                    helper.resume();
+                }, 50);
+            }
         })
         .on("error", function (e) {
-            start();
-            ok(false, e.message);
+            done();
+            assert.ok(false, e.message);
         })
         .on("end", function () {
-            start();
+            done();
         });
-        stop();
         helper.resume();
-        setTimeout(function () {
-            allowChunks = false;
-            ok(chunkCount > 0, "the stream emitted at least 1 chunk before pausing it");
-            helper.pause();
-        }, 10);
-        setTimeout(function () {
-            allowChunks = true;
-            helper.resume();
-        }, 40);
-
-
     });
 
     QUnit.module("nodejs");
diff --git a/test/index.html b/test/index.html
index dfd49876..e76063aa 100644
--- a/test/index.html
+++ b/test/index.html
@@ -32,6 +32,8 @@
       var details = log[i];
       tests.push({
          name: details.name,
+         message: details.message,
+         module: details.module,
          result: details.result,
          expected: details.expected,
          actual: details.actual,