--- a/smbldap-populate.pl
+++ b/smbldap-populate.pl
@@ -114,7 +114,7 @@ if (!defined($adminUidNumber)) {
 my $guestUidNumber=$Options{'l'};
 my $guestRid = 501;
 if (!defined($guestUidNumber)) {
-    $guestUidNumber = "999";
+    $guestUidNumber = "65534";
 } else {
     if (defined($algorithmicRidBase)) {
 	## For backward compatibility with smbldap-tools 0.9.6 and older