diff --git a/modules/net-vpc/subnets.tf b/modules/net-vpc/subnets.tf
index 917c53434..8dbe84ad9 100644
--- a/modules/net-vpc/subnets.tf
+++ b/modules/net-vpc/subnets.tf
@@ -33,7 +33,7 @@ locals {
       secondary_ip_ranges   = try(v.secondary_ip_ranges, null)
       iam                   = try(v.iam, [])
       iam_members           = try(v.iam_members, [])
-      purpose               = try(v.purpose, null)
+      purpose               = try(v.global, null)
       active                = try(v.active, null)
     }
   }
@@ -130,7 +130,7 @@ resource "google_compute_subnetwork" "proxy_only" {
   ip_cidr_range = each.value.ip_cidr_range
   description = (
     each.value.description == null
-    ? "Terraform-managed proxy-only subnet for Regional HTTPS, Internal HTTPS or Cross-Regional HTTPS Internal LB"
+    ? "Terraform-managed proxy-only subnet for Regional HTTPS, Internal HTTPS or Cross-Regional HTTPS Internal LB."
     : each.value.description
   )
   purpose = each.value.global != false ? "GLOBAL_MANAGED_PROXY" : "REGIONAL_MANAGED_PROXY"
diff --git a/tests/modules/net_vpc/examples/proxy-only-subnets.yaml b/tests/modules/net_vpc/examples/proxy-only-subnets.yaml
index 6bfef20fc..cf32912df 100644
--- a/tests/modules/net_vpc/examples/proxy-only-subnets.yaml
+++ b/tests/modules/net_vpc/examples/proxy-only-subnets.yaml
@@ -17,7 +17,7 @@ values:
     name: my-network
     project: my-project
   module.vpc.google_compute_subnetwork.proxy_only["europe-west1/regional-proxy"]:
-    description: Terraform-managed proxy-only subnet for Regional HTTPS or Internal HTTPS LB.
+    description: Terraform-managed proxy-only subnet for Regional HTTPS, Internal HTTPS or Cross-Regional HTTPS Internal LB.
     ip_cidr_range: 10.0.1.0/24
     log_config: []
     name: regional-proxy
@@ -26,7 +26,7 @@ values:
     region: europe-west1
     role: ACTIVE
   module.vpc.google_compute_subnetwork.proxy_only["australia-southeast2/global-proxy"]:
-    description: Terraform-managed proxy-only subnet for Regional HTTPS or Internal HTTPS LB.
+    description: Terraform-managed proxy-only subnet for Regional HTTPS, Internal HTTPS or Cross-Regional HTTPS Internal LB.
     ip_cidr_range: 10.0.4.0/24
     log_config: []
     name: global-proxy