diff --git a/user_guide/installation/upgrade_162.html b/user_guide/installation/upgrade_162.html
index 703d237..06b1753 100644
--- a/user_guide/installation/upgrade_162.html
+++ b/user_guide/installation/upgrade_162.html
@@ -82,8 +82,9 @@
 
 <h2>Step 3: Constants File</h2>
 <p>Copy /system/application/config/constants.php to your installation, and modify if necessary.</p>
-
-<h2>Step 4: Update your user guide</h2>
+<h2>Step 4: Mimes File</h2>
+<p>Replace /system/application/config/mimes.php with the dowloaded version. If you've added custom mime types, you'll need to re-add them.</p>
+<h2>Step 5: Update your user guide</h2>
 <p>Please also replace your local copy of the user guide with the new version.</p>
 
 </div>