diff --git a/docs/04-certificate-authority.md b/docs/04-certificate-authority.md
index f8842d9..c263901 100644
--- a/docs/04-certificate-authority.md
+++ b/docs/04-certificate-authority.md
@@ -400,7 +400,7 @@ Copy the appropriate certificates and private keys to each controller instance:
 
 ```
 for instance in controller-0 controller-1 controller-2; do
-  gcloud compute scp ca.pem ca-key.pem kubernetes-key.pem kubernetes.pem \
+  gcloud compute scp ca.pem kubernetes-key.pem kubernetes.pem \
     service-account-key.pem service-account.pem ${instance}:~/
 done
 ```