diff --git a/manifests/firewall/iptables.pp b/manifests/firewall/iptables.pp
index f6796a0..4634d11 100644
--- a/manifests/firewall/iptables.pp
+++ b/manifests/firewall/iptables.pp
@@ -7,6 +7,9 @@
 class confdroid_nrpe::firewall::iptables (
 
 ) inherits confdroid_nrpe::params {
+  $nagios_source            = $facts['nagios_source']
+  $nagios_server            = $facts['nagios_server']
+
   if $ne_incl_fw == true {
     notify { "nagios_source is set to ${nagios_source}": }
     notify { "nagios_server is set to ${nagios_server}": }