diff --git a/kubernetes_velero_backup/99_variables.tf b/kubernetes_velero_backup/99_variables.tf
index cc20c884..7a5b373b 100644
--- a/kubernetes_velero_backup/99_variables.tf
+++ b/kubernetes_velero_backup/99_variables.tf
@@ -42,7 +42,8 @@ variable "location" {
 
 variable "resource_group_name" {
   type = string
-  description = "(Required) The name of the resource group in which to create the scheduled query rule instance. Changing this forces a new resource to be created."
+  description = "(Optional) Required if alerts enabled. The name of the resource group in which to create the scheduled query rule instance. Changing this forces a new resource to be created."
+  default = null
 }