diff --git a/scripts/karma/karma.conf.js b/scripts/karma/karma.conf.js
index d05990d431..ac5855f203 100644
--- a/scripts/karma/karma.conf.js
+++ b/scripts/karma/karma.conf.js
@@ -8,6 +8,7 @@ module.exports = function(config) {
     frameworks: ['jasmine'],
 
     files: buildConfig.scripts.concat([
+      'node_modules/angular2/bundles/test_lib.dev.js',
       'dist/tests/**/*.spec.js',
       'scripts/karma/test-main.js'
     ]),
diff --git a/scripts/karma/test-main.js b/scripts/karma/test-main.js
index c0deefdd35..de357b69bb 100644
--- a/scripts/karma/test-main.js
+++ b/scripts/karma/test-main.js
@@ -4,19 +4,23 @@ jasmine.DEFAULT_TIMEOUT_INTERVAL = 50;
 // we will call `__karma__.start()` later, once all the specs are loaded.
 __karma__.loaded = function() {};
 
-Promise.all(
-  Object.keys(window.__karma__.files) // All files served by Karma.
-  .filter(onlySpecFiles)
-  .map(window.file2moduleName)        // Normalize paths to module names.
-  .map(function(path) {
-    return System.import(path).then(function(module) {
-      if (module.hasOwnProperty('run')) {
-        module.run();
-      } else {
-        console.warn('WARNING: Module ' + path + ' does not implement a run() method. No tests run.');
-      }
-    });
-  }))
+System.import('angular2/src/core/dom/browser_adapter').then(function(browser_adapter) {
+  browser_adapter.BrowserDomAdapter.makeCurrent();
+}).then(function() {
+  return Promise.all(
+    Object.keys(window.__karma__.files) // All files served by Karma.
+    .filter(onlySpecFiles)
+    .map(window.file2moduleName)        // Normalize paths to module names.
+    .map(function(path) {
+      return System.import(path).then(function(module) {
+        if (module.hasOwnProperty('run')) {
+          module.run();
+        } else {
+          console.warn('WARNING: Module ' + path + ' does not implement a run() method. No tests run.');
+        }
+      });
+    }))
+})
 .then(function() {
   __karma__.start();
 }, function(error) {