diff --git a/docs/12-dns-addon.md b/docs/12-dns-addon.md
index f7a5d43..584f474 100644
--- a/docs/12-dns-addon.md
+++ b/docs/12-dns-addon.md
@@ -4,7 +4,7 @@ In this lab you will deploy the [DNS add-on](https://kubernetes.io/docs/concepts
 
 ## The DNS Cluster Add-on
 
-Deploy the `coredns` cluster add-on:
+Deploy the `coredns` cluster add-on on `controller-0`:
 
 ```
 kubectl apply -f https://storage.googleapis.com/kubernetes-the-hard-way/coredns.yaml