diff --git a/.travis.yml b/.travis.yml
index <HASH>..<HASH> 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,3 +4,5 @@ node_js:
 before_script:
   - 'npm install -g bower grunt-cli'
   - 'bower install'
+  - "export DISPLAY=:99.0"
+  - "sh -e /etc/init.d/xvfb start"
diff --git a/karma-e2e.conf.js b/karma-e2e.conf.js
index <HASH>..<HASH> 100644
--- a/karma-e2e.conf.js
+++ b/karma-e2e.conf.js
@@ -37,7 +37,7 @@ module.exports = function(config) {
     // - Safari (only Mac)
     // - PhantomJS
     // - IE (only Windows)
-    browsers: ['Chrome'],
+    browsers: ['Firefox'],
 
 
     // Continuous Integration mode
diff --git a/karma.conf.js b/karma.conf.js
index <HASH>..<HASH> 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -42,7 +42,7 @@ module.exports = function(config) {
     // - Safari (only Mac)
     // - PhantomJS
     // - IE (only Windows)
-    browsers: ['PhantomJS'],
+    browsers: ['Firefox'],
 
 
     // Continuous Integration mode
Enable Firefox for testing. #6