diff --git a/de/heat-templates/env/mstr1-wrkr3-cmp3-gtw0.yaml b/de/heat-templates/env/mstr1-wrkr3-cmp3-gtw0.yaml
index 0cb857e..934f42c 100644
--- a/de/heat-templates/env/mstr1-wrkr3-cmp3-gtw0.yaml
+++ b/de/heat-templates/env/mstr1-wrkr3-cmp3-gtw0.yaml
@@ -27,7 +27,7 @@
   gtw_metadata: {"labels": {"openvswitch":"enabled"}}
   # hardware_metadata which is used for Ceph requires flavor with
   # ephemeral storage because it is used for Ceph bluestore.
-  workers_flavor: 'system.compact.openstack.control.ephemeral'
+  workers_flavor: 'mosk.l.control.ephemeral'
   cmps_flavor: 'system.compact.openstack.control.ephemeral'
   storage_frontend_network_cidr: '10.12.1.0/24'
   storage_backend_network_cidr: '10.12.0.0/24'