diff --git a/trace/app.js b/trace/app.js
index 7a87c2136c..e714bd195f 100644
--- a/trace/app.js
+++ b/trace/app.js
@@ -15,14 +15,11 @@
 
 'use strict';
 
-// [START trace_app]
 // [START trace_setup_nodejs_app]
 if (process.env.NODE_ENV === 'production') {
-  // [START trace_setup_implicit]
   // [START trace_setup_nodejs_implicit]
   require('@google-cloud/trace-agent').start();
   // [END trace_setup_nodejs_implicit]
-  // [END trace_setup_implicit]
 }
 
 const express = require('express');
@@ -56,4 +53,3 @@ app.listen(PORT, () => {
   console.log('Press Ctrl+C to quit.');
 });
 // [END trace_setup_nodejs_app]
-// [END trace_app]
diff --git a/trace/snippets.js b/trace/snippets.js
index 1d257aeae4..47ca10df8d 100644
--- a/trace/snippets.js
+++ b/trace/snippets.js
@@ -15,11 +15,9 @@
 
 'use strict';
 
-// [START trace_setup_explicit]
 // [START trace_setup_nodejs_explicit]
 require('@google-cloud/trace-agent').start({
   projectId: 'your-project-id',
   keyFilename: '/path/to/key.json',
 });
 // [END trace_setup_nodejs_explicit]
-// [END trace_setup_explicit]