diff --git a/docs/getting-started-guides/coreos/cloud-configs/master.yaml b/docs/getting-started-guides/coreos/cloud-configs/master.yaml
index 803b7629560..3b8ff325447 100644
--- a/docs/getting-started-guides/coreos/cloud-configs/master.yaml
+++ b/docs/getting-started-guides/coreos/cloud-configs/master.yaml
@@ -95,7 +95,7 @@ coreos:
         ExecStart=/opt/bin/kube-apiserver \
         --address=0.0.0.0 \
         --port=8080 \
-        --portal_net 10.1.0.0/16 \
+        --portal_net=10.1.0.0/16 \
         --etcd_servers=http://127.0.0.1:4001 \
         --logtostderr=true
         Restart=always
diff --git a/docs/getting-started-guides/coreos/cloud-configs/standalone.yaml b/docs/getting-started-guides/coreos/cloud-configs/standalone.yaml
index d3e245dee1c..6d8fb06a3ed 100644
--- a/docs/getting-started-guides/coreos/cloud-configs/standalone.yaml
+++ b/docs/getting-started-guides/coreos/cloud-configs/standalone.yaml
@@ -55,7 +55,7 @@ coreos:
         ExecStartPre=/usr/bin/chmod +x /opt/bin/kube-apiserver
         ExecStart=/opt/bin/kube-apiserver \
         --address=0.0.0.0 \
-        --portal_net 10.1.0.0/16 \
+        --portal_net=10.1.0.0/16 \
         --port=8080 \
         --etcd_servers=http://127.0.0.1:4001 \
         --logtostderr=true