diff --git a/keystone/server/single.yml b/keystone/server/single.yml
index 2b1e89e..68a29a7 100644
--- a/keystone/server/single.yml
+++ b/keystone/server/single.yml
@@ -1,5 +1,6 @@
 classes:
 - service.keystone.server.single
+- system.linux.system.users.keystone
 parameters:
   _param:
     keystone_service_token: token