diff --git a/templates/aws-refarch-wordpress-05-route53.yaml b/templates/aws-refarch-wordpress-05-route53.yaml
index 7b5ba80..d05b9fd 100644
--- a/templates/aws-refarch-wordpress-05-route53.yaml
+++ b/templates/aws-refarch-wordpress-05-route53.yaml
@@ -34,7 +34,7 @@ Parameters:
     Description: The DNS endpoint - CloudFront DNS if using CloudFront else Public ELB DNS name.
     Type: String
   DnsHostId:
-    AllowedPattern: ^[A-Z0-9]{14}$
+    AllowedPattern: ^[A-Z0-9]{13,14}$
     Description: The DNS host zone id - 'Z2FDTNDATAQYW2' if using CloudFront else Public ELB host zone id.
     Type: String
   WPDomainName: