diff --git a/service-worker.js b/service-worker.js
index f7ef05f1..55175e97 100644
--- a/service-worker.js
+++ b/service-worker.js
@@ -9,5 +9,5 @@
  */
 
 console.info(
-  'Service Worker disabled for development, will be generated at build time.'
+  'Service worker disabled for development, will be generated at build time.'
 );
diff --git a/src/my-app.js b/src/my-app.js
index f25313e5..78dde2ab 100644
--- a/src/my-app.js
+++ b/src/my-app.js
@@ -23,10 +23,8 @@ import '@polymer/iron-selector/iron-selector.js';
 import '@polymer/paper-icon-button/paper-icon-button.js';
 import './my-icons.js';
 
-/**
- * Gesture events like tap and track generated from touch will not be
- * preventable, allowing for better scrolling performance.
- */
+// Gesture events like tap and track generated from touch will not be
+// preventable, allowing for better scrolling performance.
 setPassiveTouchGestures(true);
 
 setRootPath(Polymer.rootPath);
@@ -134,12 +132,10 @@ class MyApp extends PolymerElement {
   }
 
   _routePageChanged(page) {
-    /**
-     * Show the corresponding page according to the route.
-     *
-     * If no page was found in the route data, page will be an empty string.
-     * Show 'view1' in that case. And if the page doesn't exist, show 'view404'.
-     */
+     // Show the corresponding page according to the route.
+     //
+     // If no page was found in the route data, page will be an empty string.
+     // Show 'view1' in that case. And if the page doesn't exist, show 'view404'.
     if (!page) {
       this.page = 'view1';
     } else if (['view1', 'view2', 'view3'].indexOf(page) !== -1) {
@@ -148,21 +144,17 @@ class MyApp extends PolymerElement {
       this.page = 'view404';
     }
 
-    /**
-     * Close a non-persistent drawer when the page & route are changed.
-     */
+    // Close a non-persistent drawer when the page & route are changed.
     if (!this.$.drawer.persistent) {
       this.$.drawer.close();
     }
   }
 
   _pageChanged(page) {
-    /**
-     * Import the page component on demand.
-     *
-     * Note: `polymer build` doesn't like string concatenation in the import
-     * statement, so break it up.
-     */
+    // Import the page component on demand.
+    //
+    // Note: `polymer build` doesn't like string concatenation in the import
+    // statement, so break it up.
     switch (page) {
       case 'view1':
         import('./my-view1.js');