diff --git a/global/overlay/etc/puppet/modules/rut/manifests/rut_mon.pp b/global/overlay/etc/puppet/modules/rut/manifests/rut_mon.pp
index 87cb75d..66a3a6a 100644
--- a/global/overlay/etc/puppet/modules/rut/manifests/rut_mon.pp
+++ b/global/overlay/etc/puppet/modules/rut/manifests/rut_mon.pp
@@ -1,24 +1,24 @@
 class rut::rut_mon {
     nagioscfg::service {'check_rut_pods':
-    hostgroup_name => 'rut::controller_nrpe',
+    hostgroup_name => ['rut::controller_nrpe'],
     check_command  => 'check_nrpe!check_rut_pods',
     description    => 'Microk8s cluster health',
     }
 
     nagioscfg::service {'check_rut_postgres':
-    hostgroup_name => 'rut::controller_nrpe',
+    hostgroup_name => ['rut::controller_nrpe'],
     check_command  => 'check_nrpe!check_rut_postgres',
     description    => 'Postgres cluster health',
     }
 
     nagioscfg::service {'check_rut_snapshots':
-    hostgroup_name => 'sunet::naemon_monitor',
+    hostgroup_name => ['sunet::naemon_monitor'],
     check_command  => 'check_nrpe!check_rut_snapshots',
     description    => 'Backup snapshots in sto4',
     }
 
     nagioscfg::service {'check_fleetlock_disabled':
-    hostgroup_name => 'sunet::fleetlock_client',
+    hostgroup_name => ['sunet::fleetlock_client'],
     check_command  => 'check_nrpe!check_fleetlock_disabled',
     description    => 'Fleetlock',
     }