diff --git a/src/lib/notification-i18n-loader.js b/src/lib/notification-i18n-loader.js
index a61755c8..71f9156a 100644
--- a/src/lib/notification-i18n-loader.js
+++ b/src/lib/notification-i18n-loader.js
@@ -1,5 +1,8 @@
-// This somewhat mysterious module
-module.exports = function(source) {
+// This somewhat mysterious module will load a json string
+// and then extract only the 'notifications' part. This is
+// meant to be used to load the partial i18n we need for
+// the service worker.
+module.exports = function (source) {
   var object = JSON.parse(source)
   var smol = {
     notifications: object.notifications || {}