diff --git a/nat-instance.tf b/nat-instance.tf
index 49b7ed7f..f7d569c0 100644
--- a/nat-instance.tf
+++ b/nat-instance.tf
@@ -135,7 +135,7 @@ resource "aws_eip_association" "nat_instance" {
 resource "aws_route" "nat_instance" {
   count                  = local.enabled ? local.nat_instance_count : 0
   route_table_id         = element(aws_route_table.private.*.id, count.index)
-  instance_id            = element(aws_instance.nat_instance.*.id, count.index)
+  network_interface_id   = element(aws_instance.nat_instance.*.primary_network_interface_id, count.index)
   destination_cidr_block = "0.0.0.0/0"
   depends_on             = [aws_route_table.private]