diff --git a/user_guide/scripts/nav.js b/user_guide/scripts/nav.js
index be0f7b1..27e6553 100644
--- a/user_guide/scripts/nav.js
+++ b/user_guide/scripts/nav.js
@@ -46,7 +46,7 @@
'<li><a href="'+base+'general/scripts.html">Scripts</a></li>' +
'<li><a href="'+base+'general/libraries.html">Using Code Igniter Libraries</a></li>' +
'<li><a href="'+base+'general/creating_libraries.html">Creating Your Own Libraries</a></li>' +
- '<li><a href="'+base+'general/base_classes.html">Creating Core Classes</a></li>' +
+ '<li><a href="'+base+'general/core_classes.html">Creating Core Classes</a></li>' +
'<li><a href="'+base+'general/hooks.html">Hooks - Extending the Core</a></li>' +
'<li><a href="'+base+'general/autoloader.html">Auto-loading Resources</a></li>' +
'<li><a href="'+base+'general/scaffolding.html">Scaffolding</a></li>' +