diff --git a/ip6t-firewall-server b/ip6t-firewall-server
index 4f13cd5..981cda2 100755
--- a/ip6t-firewall-server
+++ b/ip6t-firewall-server
@@ -1756,9 +1756,9 @@ fi
 
 echononl "\t\tMail (additional smtp ports IN)"
 
-if [[ ${#smtpd_additional_listen_ports[@]} -gt 0 ]] ; then
+if [[ ${#smtpd_additional_listen_port_arr[@]} -gt 0 ]] ; then
 
-   for _port in ${smtpd_additional_listen_ports[@]} ; do
+   for _port in ${smtpd_additional_listen_port_arr[@]} ; do
       for _dev in ${ext_if_arr[@]} ; do
          $ip6t -A INPUT -i $_dev -p tcp --dport $_port -m state --state NEW -j ACCEPT
          if $kernel_forward_between_interfaces ; then
diff --git a/ipt-firewall-server b/ipt-firewall-server
index 9b6177d..769e01f 100755
--- a/ipt-firewall-server
+++ b/ipt-firewall-server
@@ -1922,9 +1922,9 @@ fi
 
 echononl "\t\tMail (additional smtp ports IN)"
 
-if [[ ${#smtpd_additional_listen_ports[@]} -gt 0 ]] ; then
+if [[ ${#smtpd_additional_listen_port_arr[@]} -gt 0 ]] ; then
 
-   for _port in ${smtpd_additional_listen_ports[@]} ; do
+   for _port in ${smtpd_additional_listen_port_arr[@]} ; do
       for _dev in ${ext_if_arr[@]} ; do
          $ipt -A INPUT -i $_dev -p tcp --dport $_port -m state --state NEW -j ACCEPT
          if $kernel_activate_forwarding ; then