diff --git a/nova/controller.sls b/nova/controller.sls
index c7ce2ba..94ad162 100644
--- a/nova/controller.sls
+++ b/nova/controller.sls
@@ -432,7 +432,7 @@
 
 nova_controller_discover_hosts:
   cmd.run:
-  - name: nova-manage cell_v2 discover_hosts --verbose
+  - name: nova-manage cell_v2 discover_hosts --verbose --by-service
   {%- if grains.get('noservices') %}
   - onlyif: /bin/false
   {%- endif %}