diff --git a/karma.conf.js b/karma.conf.js
index e15c014b..3d7b6fcc 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -14,7 +14,8 @@ module.exports = function(config) {
 
     jspm: {
       // Edit this to your needs
-      loadFiles: ['src/**/*.js', 'test/setup.js',  'test/**/*.js']
+      loadFiles: ['test/setup.js', 'test/**/*.js'],
+      serveFiles: ['src/**/*.js']
     },