$INC = sprintf("inc/modules/guest/action-%s.php", $GLOBALS['action']);
// Is the file there?
-if ((FILE_READABLE($INC)) && (VALIDATE_MENU_ACTION("guest", $GLOBALS['action'], $GLOBALS['what']))) {
+if ((INCLUDE_READABLE($INC)) && (VALIDATE_MENU_ACTION("guest", $GLOBALS['action'], $GLOBALS['what']))) {
// Requested module is available so we load it
LOAD_INC_ONCE($INC);
} else {