diff --git a/deploy/infrastructure/modules/terraform-aws-dss/DNS.md b/deploy/infrastructure/modules/terraform-aws-dss/DNS.md
index 3894cbd45..c0749cf1f 100644
--- a/deploy/infrastructure/modules/terraform-aws-dss/DNS.md
+++ b/deploy/infrastructure/modules/terraform-aws-dss/DNS.md
@@ -9,6 +9,9 @@ it with the rest of the infrastructure.
 
 - **For Elastic Kubernetes Service (AWS)**, create the zone in your aws account and set the `aws_route53_zone_id`
   variable with the zone id. Entries will be automatically created by terraform.
+  Note that the domain or the sub-domain managed by the zone must be properly delegated by the parent domain.
+  See instructions for [subdomains delegation](https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/CreatingNewSubdomain.html#UpdateDNSParentDomain)
+
 
 ## Manual setup 
 
diff --git a/deploy/infrastructure/modules/terraform-aws-dss/README.md b/deploy/infrastructure/modules/terraform-aws-dss/README.md
index 31399dcc5..3173f4cf5 100644
--- a/deploy/infrastructure/modules/terraform-aws-dss/README.md
+++ b/deploy/infrastructure/modules/terraform-aws-dss/README.md
@@ -41,8 +41,7 @@ Download & install the following tools to your workstation:
 6. In the new directory (ie /deploy/infrastructure/personal/terraform-aws-dss-dev), initialize terraform: `terraform init`.
 7. Run `terraform plan` to check that the configuration is valid. It will display the resources which will be provisioned.
 8. Run `terraform apply` to deploy the cluster. (This operation may take up to 15 min.)
-9. If `aws_route53_zone_id` was not provided, configure the DNS resolution to the public ip addresses and for SSL certificate validation.  
-See [DNS](DNS.md) for detailed instructions for AWS Zone ID setup (DNS managed with terraform) or manual configuration. 
+9. Configure the DNS resolution according to these instructions: [Setup DNS](DNS.md)
 
 
 ## Deployment of the DSS services