diff --git a/outputs.tf b/outputs.tf
index 9833f71..1d012b8 100644
--- a/outputs.tf
+++ b/outputs.tf
@@ -19,6 +19,6 @@ output "s3_access_role_arns" {
 }
 
 output "endpoint_details" {
-  value       = module.this.enabled ? one(aws_transfer_server.default.*.endpoint_details) : null
+  value       = module.this.enabled ? one(aws_transfer_server.default[*].endpoint_details) : null
   description = "Endpoints details"
 }