diff --git a/user_guide/general/reserved_names.html b/user_guide/general/reserved_names.html
index bdd7e22..0cc57a8 100644
--- a/user_guide/general/reserved_names.html
+++ b/user_guide/general/reserved_names.html
@@ -68,6 +68,7 @@
 	<li>CI_Base</li>
 	<li>_ci_initialize</li>
 	<li>_ci_scaffolding</li>
+	<li>index</li>
 </ul>
 <p><br />
 	If you are running PHP 4 there are some additional reserved names. These ONLY apply if you are running PHP 4.</p>