diff --git a/cijenkinsio-agents-2.tf b/cijenkinsio-agents-2.tf
index 97ed81f..c04b2c1 100644
--- a/cijenkinsio-agents-2.tf
+++ b/cijenkinsio-agents-2.tf
@@ -18,7 +18,7 @@ module "cijenkinsio-agents-2" {
   cluster_version = "1.29"
   create_iam_role = true
 
-  # 2 AZs are mandatory for EKS 
+  # 2 AZs are mandatory for EKS https://docs.aws.amazon.com/eks/latest/userguide/network-reqs.html#network-requirements-subnets
   subnet_ids = slice(module.vpc.private_subnets, 2, 4)
   # Required to allow EKS service accounts to authenticate to AWS API through OIDC (and assume IAM roles)
   # useful for autoscaler, EKS addons and any AWS APi usage