diff --git a/Resources/doc/4-enable_comments_on_a_page.md b/Resources/doc/4-enable_comments_on_a_page.md
index 06af5ba55..3ac780d74 100644
--- a/Resources/doc/4-enable_comments_on_a_page.md
+++ b/Resources/doc/4-enable_comments_on_a_page.md
@@ -14,7 +14,7 @@ the page load.
 
 And the following code at a desired place in the template to load the comments:
 
-```
+```twig
 {% include '@FOSComment/Thread/async.html.twig' with {'id': 'foo'} %}
 ```