diff --git a/solutions/fully-configurable/variables.tf b/solutions/fully-configurable/variables.tf
index a9ffaccc..acb32292 100644
--- a/solutions/fully-configurable/variables.tf
+++ b/solutions/fully-configurable/variables.tf
@@ -10,9 +10,8 @@ variable "ibmcloud_api_key" {
 
 variable "existing_resource_group_name" {
   type        = string
-  description = "The name of an existing resource group to provision resource in."
-  default     = "Default"
-  nullable    = false
+  description = "The name of an existing resource group to provision the resources. If not provided the default resource group will be used."
+  default     = null
 }
 
 variable "prefix" {
diff --git a/solutions/security-enforced/variables.tf b/solutions/security-enforced/variables.tf
index f0c15b4f..8cf136bf 100644
--- a/solutions/security-enforced/variables.tf
+++ b/solutions/security-enforced/variables.tf
@@ -10,9 +10,8 @@ variable "ibmcloud_api_key" {
 
 variable "existing_resource_group_name" {
   type        = string
-  description = "The name of an existing resource group to provision resource in."
-  default     = "Default"
-  nullable    = false
+  description = "The name of an existing resource group to provision the resources. If not provided the default resource group will be used."
+  default     = null
 }
 
 variable "prefix" {