diff --git a/cmd/kubeadm/app/apis/kubeadm/v1alpha3/doc.go b/cmd/kubeadm/app/apis/kubeadm/v1alpha3/doc.go
index 6d6c2309c0..a3a3c8710e 100644
--- a/cmd/kubeadm/app/apis/kubeadm/v1alpha3/doc.go
+++ b/cmd/kubeadm/app/apis/kubeadm/v1alpha3/doc.go
@@ -177,7 +177,7 @@ limitations under the License.
 // 	    value: "master"
 // 	    effect: "NoSchedule"
 // 	  kubeletExtraArgs:
-// 	    cgroupDriver: "cgroupfs"
+// 	    cgroup-driver: "cgroupfs"
 // 	apiEndpoint:
 // 	  advertiseAddress: "10.100.0.1"
 // 	  bindPort: 6443