diff --git a/cluster/kubemark/config-default.sh b/cluster/kubemark/config-default.sh
index 4158d1fde5e..e0e78dc0a3b 100644
--- a/cluster/kubemark/config-default.sh
+++ b/cluster/kubemark/config-default.sh
@@ -42,7 +42,7 @@ INSTANCE_PREFIX="${INSTANCE_PREFIX:-"default"}"
 MASTER_NAME="${INSTANCE_PREFIX}-kubemark-master"
 MASTER_TAG="kubemark-master"
 MASTER_IP_RANGE="${MASTER_IP_RANGE:-10.246.0.0/24}"
-CLUSTER_IP_RANGE="${CLUSTER_IP_RANGE:-10.240.0.0/13}"
+CLUSTER_IP_RANGE="${CLUSTER_IP_RANGE:-10.240.0.0/11}"
 RUNTIME_CONFIG="${KUBE_RUNTIME_CONFIG:-}"
 TERMINATED_POD_GC_THRESHOLD=${TERMINATED_POD_GC_THRESHOLD:-100}