diff --git a/cloud-init/Readme.md b/cloud-init/Readme.md
index c4f16e9..50aca93 100644
--- a/cloud-init/Readme.md
+++ b/cloud-init/Readme.md
@@ -2,3 +2,4 @@ Create an Ubuntu 20.04 template on a PVE server :
 ```
 curl -Ls https://gitlab.altinea.fr/altinea/install-scripts/raw/branch/master/cloud-init/create_ubuntu20_template.sh |sh -s -- <storage>
 ```
+\<storage\> should be a valid declared storage accessible on the PVE server