diff --git a/main.tf b/main.tf
index 258ce92a..7b7b200b 100644
--- a/main.tf
+++ b/main.tf
@@ -1,8 +1,5 @@
-data "aws_sns_topic" "this" {
-  count = false == var.create_sns_topic && var.create ? 1 : 0
-
-  name = var.sns_topic_name
-}
+data "aws_caller_identity" "current" {}
+data "aws_region" "current" {}
 
 resource "aws_sns_topic" "this" {
   count = var.create_sns_topic && var.create ? 1 : 0
@@ -15,9 +12,8 @@ resource "aws_sns_topic" "this" {
 locals {
   sns_topic_arn = element(
     concat(
-      aws_sns_topic.this.*.arn,
-      data.aws_sns_topic.this.*.arn,
-      [""],
+      aws_sns_topic.this.*.id,
+      ["arn:aws:sns:${data.aws_region.current.name}:${data.aws_caller_identity.current.account_id}:${var.sns_topic_name}"],
     ),
     0,
   )