diff --git a/karma.conf.js b/karma.conf.js
index f985c3f81..84d277f72 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -50,6 +50,10 @@ module.exports = function(config) {
         included: false,
         served: false
       },
+      {
+        pattern: 'node_modules/google-closure-library/closure/goog/**/*.js',
+        included: false
+      },
       {
         pattern: 'core/build/resources/main/google/registry/ui/assets/images/*.png',
         included: false