diff --git a/group_vars/monitoring.yaml b/group_vars/monitoring.yaml
index d50d06d..c284199 100644
--- a/group_vars/monitoring.yaml
+++ b/group_vars/monitoring.yaml
@@ -2,4 +2,4 @@ monitoring_master: true
 extra_internal_iptables_ports_allow:
     - { "protocol" : "tcp", "port" : 8086, "comment" : "influx" }
     - { "protocol" : "tcp", "port" : 514, "comment" : "rsyslog" }
-    - { "protocol" : "tcp", "port" : 5668, "comment" : "nsca-ng" }
+    - { "protocol" : "tcp", "port" : 5665, "comment" : "nsca-ng" }