diff --git a/manifests/firewall/iptables.pp b/manifests/firewall/iptables.pp
index f813fd4..6d07fda 100644
--- a/manifests/firewall/iptables.pp
+++ b/manifests/firewall/iptables.pp
@@ -9,10 +9,10 @@ class confdroid_nrpe::firewall::iptables (
 ) inherits confdroid_nrpe::params {
   if $ne_incl_fw == true {
     firewall { "${ne_fw_order_no}${ne_nrpe_port} port ${ne_nrpe_port}":
-      source => $nagios_server,
-      proto => 'tcp',
-      dport => $ne_nrpe_port,
-      jump  => 'accept',
+      source => $ne_nagios_server,
+      proto  => 'tcp',
+      dport  => $ne_nrpe_port,
+      jump   => 'accept',
     }
   }
 }