diff --git a/main.tf b/main.tf
index f125959..d84ec0a 100644
--- a/main.tf
+++ b/main.tf
@@ -10,7 +10,7 @@ resource "hcloud_ssh_key" "k3s" {
 
 resource "hcloud_network" "k3s" {
   name     = var.cluster_name
-  ip_range = var.network_ipv4_range
+  ip_range = local.network_ipv4_cidr
 }
 
 resource "hcloud_network_subnet" "subnet" {