diff --git a/playbooks/groups/overcloud-config.yml b/playbooks/groups/overcloud-config.yml
index d916423ead..18162a5f79 100644
--- a/playbooks/groups/overcloud-config.yml
+++ b/playbooks/groups/overcloud-config.yml
@@ -230,7 +230,7 @@
 
   - name: Add rule to new security group (nagios)
     os_security_group_rule:
-          security_group: 'nagios-{{item}}'
+          security_group: 'allow-nagios-{{item}}'
           cloud: "{{ os_cloud }}"
           direction: "ingress"
           port_range_min: "5666"