diff --git a/docs/tasks/administer-cluster/dns-horizontal-autoscaler.yaml b/docs/tasks/administer-cluster/dns-horizontal-autoscaler.yaml
index a919015f3c..f29dd2e275 100644
--- a/docs/tasks/administer-cluster/dns-horizontal-autoscaler.yaml
+++ b/docs/tasks/administer-cluster/dns-horizontal-autoscaler.yaml
@@ -22,7 +22,6 @@ spec:
           - /cluster-proportional-autoscaler
           - --namespace=kube-system
           - --configmap=kube-dns-autoscaler
-          - --mode=linear
           - --target=<SCALE_TARGET>
           # When cluster is using large nodes(with more cores), "coresPerReplica" should dominate.
           # If using small nodes, "nodesPerReplica" should dominate.