diff --git a/modules/net-glb/backend-service.tf b/modules/net-glb/backend-service.tf
index f8956e138b..acadda3bdb 100644
--- a/modules/net-glb/backend-service.tf
+++ b/modules/net-glb/backend-service.tf
@@ -60,7 +60,7 @@ resource "google_compute_backend_service" "default" {
   health_checks = length(each.value.health_checks) == 0 ? null : [
     for k in each.value.health_checks : lookup(local.hc_ids, k, k)
   ]
-  load_balancing_scheme = "EXTERNAL"
+  load_balancing_scheme = var.use_classic_version ? "EXTERNAL" : "EXTERNAL_MANAGED"
   port_name = (
     each.value.port_name == null
     ? lower(each.value.protocol == null ? var.protocol : each.value.protocol)