diff --git a/k3os/README.md b/k3os/README.md
index 00a3100..366435e 100644
--- a/k3os/README.md
+++ b/k3os/README.md
@@ -13,7 +13,7 @@
 * Click the script file name in Gitea, then use the 'Raw' button and copy the URL to get the public file. Use wget to download it to the node.
 * Allow execution of the script by using 'chmod +x SCRIPT_FILE_NAME'.
 * Use 'ipconfig.sh' to change the IP address of the nodes from DHCP to static and define them. Run with sudo.
-* Use 'set_hostname.sh' to change the hostname of the nodes. Run with sudo.
+* Use 'set_hostname.sh' to change the hostname of the nodes. Run with sudo. After changing hostname, use kubectl delete node to remove old hostnames.
 * To allow workers to use kubectl, first run 'toggle_sshd_password_auth.sh' on the master to enable password SSH authentication, then run 'download_kubeconfig_from_master.sh' on the workers to download the kubeconfig from the master.
 * Use the script in 'install/helm.txt' to install Helm on the master.
 * Use the commands in 'install/rancher.txt' to install Rancher on the cluster. 
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