diff --git a/roles/common/tasks/firewall_Debian.yml b/roles/common/tasks/firewall_Debian.yml
index 2caf450..f03ec59 100644
--- a/roles/common/tasks/firewall_Debian.yml
+++ b/roles/common/tasks/firewall_Debian.yml
@@ -1,4 +1,5 @@
 ---
+# Debian 10 will use firewalld with the iptables backend.
 # Debian 11 will use nftables directly, with no firewalld.
 
 - block: