diff --git a/infrastructure/terraform/modules/route53/main.tf b/infrastructure/terraform/modules/route53/main.tf
index 293dfc70..d40714fb 100644
--- a/infrastructure/terraform/modules/route53/main.tf
+++ b/infrastructure/terraform/modules/route53/main.tf
@@ -5,7 +5,7 @@ resource "aws_route53_zone" "my_hosted_zone" {
 # Request an SSL certificate for the domain
 resource "aws_acm_certificate" "my_certificate_request" {
   domain_name               = var.domain_name
-  subject_alternative_names = ["*.{var.domain_name}"]
+  subject_alternative_names = ["*.${var.domain_name}"]
   validation_method         = "DNS"
 
   tags = {