diff --git a/docs/plugins.rst b/docs/plugins.rst
index 77b114cf..3537f16b 100644
--- a/docs/plugins.rst
+++ b/docs/plugins.rst
@@ -302,7 +302,7 @@ For example::
     {% if article.related_posts %}
         <ul>
         {% for related_post in article.related_posts %}
-            <li><a href="{{ related_post.url }}">{{ related_post.title }}</a></li>
+            <li><a href="{{ SITEURL }}/{{ related_post.url }}">{{ related_post.title }}</a></li>
         {% endfor %}
         </ul>
     {% endif %}