diff --git a/main.tf b/main.tf
index 4aa0708..b9e314f 100644
--- a/main.tf
+++ b/main.tf
@@ -30,7 +30,7 @@ data "aws_kms_key" "ebs_key" {
 locals {
   additional_policies = {}
   base_tags = {
-    "boc:eks-cluster-name"   = var.cluster_name
+    "boc:eks_cluster_name"   = var.cluster_name
     "boc:tf_module_name"     = local.module_name
     "boc:tf_module_version"  = local.module_version
     "boc:created_by"         = "terragrunt"