{
$result = SQL_QUERY_ESC("SELECT what, title, sort
FROM "._MYSQL_PREFIX."_guest_menu
-WHERE action='%s' AND what != '' ORDER BY sort",
+WHERE action='%s' AND what != '' AND what IS NOT NULL ORDER BY sort",
array(bigintval($value_main)), __FILE__, __LINE__);
if (SQL_NUMROWS($result) > 0)
{