diff --git a/docs/admin/kubeadm.md b/docs/admin/kubeadm.md
index 2dcf571cfc..56e3991e3b 100644
--- a/docs/admin/kubeadm.md
+++ b/docs/admin/kubeadm.md
@@ -525,7 +525,7 @@ it off regardless. Doing so will disable the ability to use the `--discovery-tok
 Fetch the `cluster-info` file from the API Server:
 
 ```console
-$ kubectl -n kube-public get cm cluster-info -oyaml | grep "kubeconfig:" -A11 | grep "apiVersion" -A10 | sed "s/    //" | tee cluster-info.yaml
+$ kubectl -n kube-public get cm cluster-info -o yaml | grep "kubeconfig:" -A11 | grep "apiVersion" -A10 | sed "s/    //" | tee cluster-info.yaml
 apiVersion: v1
 clusters:
 - cluster:
diff --git a/docs/tasks/administer-cluster/kubeadm-upgrade-1-8.md b/docs/tasks/administer-cluster/kubeadm-upgrade-1-8.md
index f3cff59d71..cde7a57861 100644
--- a/docs/tasks/administer-cluster/kubeadm-upgrade-1-8.md
+++ b/docs/tasks/administer-cluster/kubeadm-upgrade-1-8.md
@@ -85,7 +85,7 @@ $ kubeadm upgrade plan
 [upgrade/health] Checking Static Pod manifests exists on disk: All manifests exist on disk
 [upgrade/config] Making sure the configuration is correct:
 [upgrade/config] Reading configuration from the cluster...
-[upgrade/config] FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -oyaml'
+[upgrade/config] FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -o yaml'
 [upgrade] Fetching available versions to upgrade to:
 [upgrade/versions] Cluster version: v1.7.1
 [upgrade/versions] kubeadm version: v1.8.0
@@ -146,7 +146,7 @@ $ kubeadm upgrade apply v1.8.0
 [upgrade/health] Checking Static Pod manifests exists on disk: All manifests exist on disk
 [upgrade/config] Making sure the configuration is correct:
 [upgrade/config] Reading configuration from the cluster...
-[upgrade/config] FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -oyaml'
+[upgrade/config] FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -o yaml'
 [upgrade/version] You have chosen to upgrade to version "v1.8.0"
 [upgrade/versions] Cluster version: v1.7.1
 [upgrade/versions] kubeadm version: v1.8.0