diff --git a/cluster/common.sh b/cluster/common.sh
index f35915c537a..f96c1c3f077 100755
--- a/cluster/common.sh
+++ b/cluster/common.sh
@@ -865,11 +865,6 @@ EOF
     if [ -n "${ETCD_QUORUM_READ:-}" ]; then
       cat >>$file <<EOF
 ETCD_QUORUM_READ: $(yaml-quote ${ETCD_QUORUM_READ})
-EOF
-    fi
-    if [ -n "${CLUSTER_SIGNING_DURATION:-}" ]; then
-      cat >>$file <<EOF
-CLUSTER_SIGNING_DURATION: $(yaml-quote ${CLUSTER_SIGNING_DURATION})
 EOF
     fi
 
diff --git a/cluster/gce/config-default.sh b/cluster/gce/config-default.sh
index 2dce7e9c8f6..fd3fbce4d36 100755
--- a/cluster/gce/config-default.sh
+++ b/cluster/gce/config-default.sh
@@ -314,9 +314,6 @@ ENABLE_PROMETHEUS_TO_SD="${ENABLE_PROMETHEUS_TO_SD:-false}"
 # Optional: Run kube-proxy as a DaemonSet if set to true, run as static pods otherwise.
 KUBE_PROXY_DAEMONSET="${KUBE_PROXY_DAEMONSET:-false}" # true, false
 
-# Optional: duration of cluster signed certificates.
-CLUSTER_SIGNING_DURATION="${CLUSTER_SIGNING_DURATION:-}"
-
 # Optional: enable pod priority
 ENABLE_POD_PRIORITY="${ENABLE_POD_PRIORITY:-}"
 if [[ "${ENABLE_POD_PRIORITY}" == "true" ]]; then
diff --git a/cluster/gce/config-test.sh b/cluster/gce/config-test.sh
index 466d389828f..e4f612b26fc 100755
--- a/cluster/gce/config-test.sh
+++ b/cluster/gce/config-test.sh
@@ -194,7 +194,7 @@ KUBEPROXY_TEST_ARGS="${KUBEPROXY_TEST_ARGS:-} ${TEST_CLUSTER_API_CONTENT_TYPE}"
 # TODO(piosz): remove this in 1.8
 NODE_LABELS="${KUBE_NODE_LABELS:-beta.kubernetes.io/fluentd-ds-ready=true}"
 
-# To avoid running Calico on a node that is not configured appropriately,
+# To avoid running Calico on a node that is not configured appropriately, 
 # label each Node so that the DaemonSet can run the Pods only on ready Nodes.
 if [[ ${NETWORK_POLICY_PROVIDER:-} == "calico" ]]; then
 	NODE_LABELS="$NODE_LABELS,projectcalico.org/ds-ready=true"
@@ -372,9 +372,6 @@ ENABLE_PROMETHEUS_TO_SD="${ENABLE_PROMETHEUS_TO_SD:-true}"
 # Optional: Run kube-proxy as a DaemonSet if set to true, run as static pods otherwise.
 KUBE_PROXY_DAEMONSET="${KUBE_PROXY_DAEMONSET:-false}" # true, false
 
-# Optional: duration of cluster signed certificates.
-CLUSTER_SIGNING_DURATION="${CLUSTER_SIGNING_DURATION:-30m}"
-
 # Optional: enable pod priority
 ENABLE_POD_PRIORITY="${ENABLE_POD_PRIORITY:-}"
 if [[ "${ENABLE_POD_PRIORITY}" == "true" ]]; then
diff --git a/cluster/gce/gci/configure-helper.sh b/cluster/gce/gci/configure-helper.sh
index 0bfdc3c1ad3..d1db2edfcdf 100644
--- a/cluster/gce/gci/configure-helper.sh
+++ b/cluster/gce/gci/configure-helper.sh
@@ -1535,10 +1535,6 @@ function start-kube-controller-manager {
   if [[ -n "${VOLUME_PLUGIN_DIR:-}" ]]; then
     params+=" --flex-volume-plugin-dir=${VOLUME_PLUGIN_DIR}"
   fi
-  if [[ -n "${CLUSTER_SIGNING_DURATION:-}" ]]; then
-    params+=" --experimental-cluster-signing-duration=$CLUSTER_SIGNING_DURATION"
-  fi
-
   local -r kube_rc_docker_tag=$(cat /home/kubernetes/kube-docker-files/kube-controller-manager.docker_tag)
   local container_env=""
   if [[ -n "${ENABLE_CACHE_MUTATION_DETECTOR:-}" ]]; then