diff --git a/terraform.tf b/terraform.tf
index 74c22d9..85a1ab3 100644
--- a/terraform.tf
+++ b/terraform.tf
@@ -30,6 +30,7 @@ variable "nr_tags" {
   type        = string
   description = "Additional tags added to the logs"
   sensitive   = false
+  default     = null
 }
 
 variable "lambda_archive" {