changed include into include_once
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index b0fa83d..b8bbb33 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -68,7 +68,7 @@
 	<li>Libraries

 		<ul>

 			<li>Added increased security for filename handling in the Upload library.</li>

-			<li>Added increased security for sessions for client-side tampering.</li>

+			<li>Added increased security for sessions for client-side data tampering.</li>

 		</ul>

 	</li>

     <li>Helpers