diff --git a/outputs.tf b/outputs.tf
index 0b4b8fe..6f9ee76 100644
--- a/outputs.tf
+++ b/outputs.tf
@@ -16,7 +16,7 @@ output "az" {
 }
 
 output "public_ip" {
-  value       = coalesce(aws_eip.default.*.public_ip, aws_instance.default.*.public_ip)
+  value       = concat(aws_eip.default.*.public_ip, aws_instance.default.*.public_ip, [""])[0]
   description = "Public IP of instance (or EIP)."
 
 }
@@ -54,4 +54,4 @@ output "subnet_id" {
 output "instance_count" {
   value       = var.instance_count
   description = "The count of instances."
-}
\ No newline at end of file
+}