diff --git a/config.php-dist b/config.php-dist
index eaaaa3d6..a5a7fc3e 100644
--- a/config.php-dist
+++ b/config.php-dist
@@ -128,6 +128,8 @@
 	define('SESSION_COOKIE_LIFETIME', 86400*30);
 	// Default lifetime of a session (e.g. login) cookie. In seconds, 
 	// 0 means cookie will be deleted when browser closes.
+	// Setting this to zero will affect several user preferences
+	// like widescreen mode not saving.
 
 	define('SESSION_EXPIRE_TIME', 86400*30);
 	// Hard expiration limit for sessions. Should be