diff --git a/ipt-firewall-server b/ipt-firewall-server
index b295118..7dfc6e7 100755
--- a/ipt-firewall-server
+++ b/ipt-firewall-server
@@ -1785,7 +1785,7 @@ if [ "X$munin_remote_ip" != "X" ]; then
    for _dev in ${ext_if_arr[@]} ; do
       $ipt -A INPUT -i $_dev -p tcp -s $munin_remote_ip --dport $munin_local_port -m state --state NEW -j ACCEPT
       if $kernel_activate_forwarding ; then
-         $ipt -A FORWARD -i $_dev -p tcp-s $munin_remote_ip --dport $munin_local_port -m state --state NEW -j ACCEPT
+         $ipt -A FORWARD -i $_dev -p tcp -s $munin_remote_ip --dport $munin_local_port -m state --state NEW -j ACCEPT
       fi
    done
    echo_done