diff --git a/inventory/group_vars/badges-backend-stg b/inventory/group_vars/badges-backend-stg
index c8ee187fe7..4b8e0fe8f6 100644
--- a/inventory/group_vars/badges-backend-stg
+++ b/inventory/group_vars/badges-backend-stg
@@ -16,6 +16,9 @@ fas_client_groups: sysadmin-noc,sysadmin-badges,sysadmin-veteran
 fedmsg_error_recipients:
 - sysadmin-badges-members@fedoraproject.org
 
+# Very low limit, for testing purposes.
+fedmsg_hub_memory_limit_mb: 10
+
 # These are consumed by a task in roles/fedmsg/base/main.yml
 fedmsg_certs:
 - service: shell