diff --git a/kubernetes/tofu/main.tf b/kubernetes/tofu/main.tf
index 8289541..d838286 100644
--- a/kubernetes/tofu/main.tf
+++ b/kubernetes/tofu/main.tf
@@ -37,10 +37,10 @@ locals {
 
   worker_nodes = {
     for i in range(var.worker_count) :
-    "k8s-worker-${toString(i)}" => {
+    "k8s-worker-${tostring(i)}" => {
       role      = "worker"
       ip_suffix = 11 + i
-      ip        = "192.168.${local.subnet_third_octet}.${toString(11 + i)}"
+      ip        = "192.168.${local.subnet_third_octet}.${tostring(11 + i)}"
       mac       = "52:54:00:00:00:${format("%02x", 11 + i)}"
       vcpus     = 2
       memory    = 4096