diff --git a/roles/nagios_server/files/nagios/services/ping.cfg b/roles/nagios_server/files/nagios/services/ping.cfg
index 525ff6310c..995647da92 100644
--- a/roles/nagios_server/files/nagios/services/ping.cfg
+++ b/roles/nagios_server/files/nagios/services/ping.cfg
@@ -6,7 +6,7 @@ define service {
 }
 
 define service {
-  hostgroup_name		buildvm_armv7, buildvm_s390x, buildvm-s390x_stg
+  hostgroup_name		buildvm_armv7, buildvm_s390x, buildvm_s390x_stg
   service_description		ICMP-Ping4-vm-builders
   check_command			check_ping4!1500.0,20%!2500.0,80%
   use				criticaltemplate