diff --git a/user_guide/installation/upgrade_150.html b/user_guide/installation/upgrade_150.html
index 55ebaa7..b532073 100644
--- a/user_guide/installation/upgrade_150.html
+++ b/user_guide/installation/upgrade_150.html
@@ -71,16 +71,17 @@
<h2>Step 1: Update your Code Igniter files</h2>
-<p>Replace these directories in your "system" folder with the new versions:
+<p>Replace these files and directories in your "system" folder with the new versions:
<ul>
-<li><dfn>system/codeigniter/</dfn></li>
-<li><dfn>system/database/</dfn> (new for 1.5)</li>
-<li><dfn>system/helpers/</dfn></li>
-<li><dfn>system/language/</dfn></li>
-<li><dfn>system/libraries/</dfn></li>
-<li><dfn>system/scaffolding/</dfn></li>
+<li><dfn>application/config/user_agents.php</dfn> (new file for 1.5)</li>
+<li><dfn>codeigniter/</dfn></li>
+<li><dfn>database/</dfn> (new folder for 1.5. Replaces the "drivers" folder)</li>
+<li><dfn>helpers/</dfn></li>
+<li><dfn>language/</dfn></li>
+<li><dfn>libraries/</dfn></li>
+<li><dfn>scaffolding/</dfn></li>
</ul>
<p class="important"><strong>Note:</strong> If you have any custom developed files in these folders please make copies of them first.</p>