diff --git a/karma.conf.js b/karma.conf.js
index 6934f0e347..b5780d2d0f 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -61,7 +61,7 @@ module.exports = function(config) {
 
     // start these browsers
     // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
-        browsers: ['Chrome'],
+        browsers: ['Chrome', 'Firefox'],
 
     // Continuous Integration mode
     // if true, Karma captures browsers, runs the tests and exits
@@ -76,6 +76,7 @@ module.exports = function(config) {
             'karma-webpack',
             'karma-requirejs',
             'karma-chrome-launcher',
+            'karma-firefox-launcher',
             'karma-browserify',
             'karma-sourcemap-loader'
         ]