diff --git a/README.md b/README.md
index 9b871b03880782d44fba09b9d00fe4d5131220dc..39ce3bab9debb292a9aa035a0e7ca2f60527bdcf 100644
--- a/README.md
+++ b/README.md
@@ -72,7 +72,7 @@ downloaded from <https://access.redhat.com/downloads/>
 Rename the downloaded image to match the following naming example: `rhel-server-8.2-20200515-1-x86_64.raw`
 
 Upload it from a machine with [openstackclient](https://clouddocs.web.cern.ch/clients/linux_client_installation.html#centos-7), bear in mind you will need permissions
-to run `guestfish` so you will not be able to use `aiadm`.
+to run `guestfish` so you will not be able to use `aiadm`. For authentication you can use the Openstack RC file from the tenant web interface (top right corner, under `Tools`).
 
 Upload it with ```./upload2openstack.sh rhel8 prod x86_64 20200515``` then shared using: