diff --git a/test/mascara.conf.js b/test/mascara.conf.js
index 3b8de28b4..faf3147bd 100644
--- a/test/mascara.conf.js
+++ b/test/mascara.conf.js
@@ -7,7 +7,7 @@ module.exports = function (config) {
   settings.files.push('dist/mascara/ui.js')
   settings.files.push('dist/mascara/tests.js')
   // service worker background
-  settings.files.push({ pattern: 'dist/mascara/background.js', watched: false, included: false, served: true }),
+  settings.files.push({ pattern: 'dist/mascara/background.js', watched: false, included: false, served: true })
   settings.proxies['/background.js'] = '/base/dist/mascara/background.js'
 
   // use this to keep the browser open for debugging