diff --git a/cluster/gce/gci/configure-helper.sh b/cluster/gce/gci/configure-helper.sh
index 24aba9d032..9be184154c 100644
--- a/cluster/gce/gci/configure-helper.sh
+++ b/cluster/gce/gci/configure-helper.sh
@@ -804,7 +804,7 @@ function start-kube-apiserver {
     params+=" --advertise-address=${vm_external_ip}"
     params+=" --ssh-user=${PROXY_SSH_USER}"
     params+=" --ssh-keyfile=/etc/srv/sshproxy/.sshkeyfile"
-  else [ -n "${MASTER_ADVERTISE_ADDRESS:-}" ]
+  elif [ -n "${MASTER_ADVERTISE_ADDRESS:-}" ]; then
     params="${params} --advertise-address=${MASTER_ADVERTISE_ADDRESS}"
   fi