diff --git a/docker-openvpn-server/cluster/outputs.tf b/docker-openvpn-server/cluster/outputs.tf
index 7eb5e24..bf277f1 100644
--- a/docker-openvpn-server/cluster/outputs.tf
+++ b/docker-openvpn-server/cluster/outputs.tf
@@ -6,3 +6,7 @@ output "vpn_server_sg_id" {
 output "role_id_openvpn" {
   value = "${aws_iam_role.role.unique_id}"
 }
+
+output "vpn_server_eip_id" {
+  value = "${element(concat(aws_eip.openvpn_eip.*.id, list("")), 0)}"
+}