diff --git a/cloudtrail/additional-sqs.tf b/cloudtrail/additional-sqs.tf
index d66d6c9..f25c02c 100644
--- a/cloudtrail/additional-sqs.tf
+++ b/cloudtrail/additional-sqs.tf
@@ -1,5 +1,5 @@
 locals {
-  additional_sqs_names = var.enable_sqs ? toset(var.additional_sqs_names) : {}
+  additional_sqs_names = var.enable_sqs ? toset(var.additional_sqs_names) : toset([])
 }
 
 resource "aws_sqs_queue" "additional_cloudtrail_deadletter" {