diff --git a/README.md b/README.md
index a4702c4..da99a16 100644
--- a/README.md
+++ b/README.md
@@ -13,3 +13,10 @@ This repository is for testing purpose before deploying code into [master reposi
 7. In $USER crontab file put `44 */3 * * * cd ~/dn42/dn42-rpki-export.json-test/ && php roagen.php && php rfc8416.php`. Finetune time between runs to your liking.
 
 NB: The roagen.php script is written with the paths to the dn42 registry folder being both git repositories reside in the same parent folder.
+
+```
+$ tree -L 1 ~/dn42/
+dn42
+|-- registry
+`-- rpki-export-test
+```