diff --git a/demo.html b/demo.html
index 6743d273b12..f88bfa2697e 100644
--- a/demo.html
+++ b/demo.html
@@ -241,7 +241,7 @@ <h2>Iframe Backgrounds</h2>
 
 				<section>
 					<h2>Pretty Code</h2>
-					<pre><code class="hljs" data-trim data-line-numbers="4,8-9">
+					<pre><code class="hljs" data-trim data-line-numbers="4,8-11">
 import React, { useState } from 'react';
 
 function Example() {