diff --git a/user_guide/libraries/config.html b/user_guide/libraries/config.html
index 98b6052..66b8426 100644
--- a/user_guide/libraries/config.html
+++ b/user_guide/libraries/config.html
@@ -150,6 +150,7 @@
 
 <p>Where <var>item_name</var> is the $config array index you want to change, and <var>item_value</var> is its value.</p>
 
+<a name="environments"></a>
 <h2>Environments</h2>
 
 <p>You can set the environment of you application and load config items depending on the current environment. It also disables PHP from displaying errors in environments other than development. To set your environment, open <strong>index.php</strong>, located at the root and change the <var>ENVIRONMENT</var> constant. By default, there is support for a development, test and production environment.</p>
@@ -195,4 +196,4 @@
 </div>
 
 </body>
-</html>
\ No newline at end of file
+</html>