diff --git a/ci/prepare_testem.rb b/ci/prepare_testem.rb
index 143268d5..1351b28a 100644
--- a/ci/prepare_testem.rb
+++ b/ci/prepare_testem.rb
@@ -5,6 +5,6 @@ pull_request = ENV['TRAVIS_PULL_REQUEST'] != 'false'
 testem = JSON.parse(File.read('testem.json'))
 
 testem['launch_in_ci'] =  ['PhantomJS']
-testem['launch_in_ci'] += ['SL_chrome', 'SL_firefox'] unless pull_request
+#testem['launch_in_ci'] += ['SL_chrome', 'SL_firefox'] unless pull_request
 
 File.open('testem.json', 'w') { |f| f.write testem.to_json }