diff --git a/manifests/firewall/iptables.pp b/manifests/firewall/iptables.pp
index 7341a94..8593066 100644
--- a/manifests/firewall/iptables.pp
+++ b/manifests/firewall/iptables.pp
@@ -26,7 +26,7 @@ class cd_nrpe::firewall::iptables (
 
   if $ne_incl_fw == true {
 
-    firewall { "${ne_fw_order_no}${ne_nrpe_port} tcp ${ne_nrpe_port}":
+    firewall { "${ne_fw_order_no}${ne_nrpe_port} port ${ne_nrpe_port}":
       proto   => ['tcp','udp'],
       dport   => $ne_nrpe_port,
       action  => 'accept',