diff --git a/Plan Borg/models/model-conf-remote-client.yaml b/Plan Borg/models/model-conf-remote-client.yaml
index 8229ddd..23f5355 100644
--- a/Plan Borg/models/model-conf-remote-client.yaml	
+++ b/Plan Borg/models/model-conf-remote-client.yaml	
@@ -20,8 +20,8 @@ storage:
      encryption_passphrase: 'XXXXXXXXXXXXXXXX'
      archive_name_format: '{now:%Y-%m-%dT%H:%M}'
 
-#retention:
-#     prefix: '{fqdn}-'
+retention:
+    prefix: '2' # This foo line is required with old borgmatic version.
 
 output:
     color: false