diff --git a/app/config/core.php b/app/config/core.php
index e0434b369..a0ae31f67 100644
--- a/app/config/core.php
+++ b/app/config/core.php
@@ -179,7 +179,8 @@
 
 /**
  * When set to false, HTTP_USER_AGENT will not be checked
- * in the session
+ * in the session. You might want to set the value to false, when dealing with
+ * older versions of IE, Chrome Frame or certain web-browsing devices and AJAX
  */
 	Configure::write('Session.checkAgent', true);