diff --git a/encrypt_arclight/cert.html b/encrypt_arclight/cert.html
index 73823fb..ccef59a 100644
--- a/encrypt_arclight/cert.html
+++ b/encrypt_arclight/cert.html
@@ -292,7 +292,7 @@ <h1 id="onboarding-resources">
             Apache using the a2ensite command. To do that run the following
             command, be sure to use your domain name:
           </p>
-          <pre><code class="language-sh">sudo a2ensite mydomain.com</code></pre>
+          <pre><code class="language-sh">sudo a2ensite mydomain.com.conf</code></pre>
 
           <p>
             When Apache is only used for the arclight it would be a good idea