diff --git a/puppet/hieradata/controller.yaml b/puppet/hieradata/controller.yaml
index 7a446b5017..0b3b8fe72a 100644
--- a/puppet/hieradata/controller.yaml
+++ b/puppet/hieradata/controller.yaml
@@ -31,6 +31,7 @@ rabbitmq_kernel_variables:
 rabbitmq_config_variables:
   tcp_listen_options: '[binary, {packet, raw}, {reuseaddr, true}, {backlog, 128}, {nodelay, true}, {exit_on_close, false}, {keepalive, true}]'
   cluster_partition_handling: 'pause_minority'
+  loopback_users: '[]'
 
 mongodb::server::replset: tripleo
 mongodb::server::journal: false