diff --git a/examples/test.js b/examples/test.js
index bae9073..0d43b3c 100644
--- a/examples/test.js
+++ b/examples/test.js
@@ -1,9 +1,14 @@
 'use strict'
 
 const nroonga = require('../lib/nroonga')
-
 const db = new nroonga.Database()
 
+// Synchronous
+console.log('// Synchronous')
+console.log(db.commandSync('status'))
+
+// Asynchronous
 db.command('status', (_, data) => {
+  console.log('// Asynchronous')
   console.log(data)
 })