diff --git a/chroot-bind.sh b/chroot-bind.sh
index 08c665e..5273e5a 100644
--- a/chroot-bind.sh
+++ b/chroot-bind.sh
@@ -7,8 +7,10 @@
 # Exec this script after `(apt-get|aptitude|apt) install bind9`
 # and after *each* bind9 upgrade
 
-# When the script is finished, ensure you have
-# 'OPTIONS="-u bind -t /var/chroot-bind"' in /etc/default/bind9
+# When the script is finished, ensure you have (since Bullseye)
+# 'OPTIONS="-u bind -t /var/chroot-bind"' in /etc/default/named
+### or (until Buster)
+### 'OPTIONS="-u bind -t /var/chroot-bind"' in /etc/default/bind9
 # and /etc/init.d/bind9 (re)start
 #
 # for Jessie/systemd only: