diff --git a/quickstart/201-k8s-cluster-with-aks-applicationgateway-ingress/variables.tf b/quickstart/201-k8s-cluster-with-aks-applicationgateway-ingress/variables.tf
index 044807c6..21ece46a 100644
--- a/quickstart/201-k8s-cluster-with-aks-applicationgateway-ingress/variables.tf
+++ b/quickstart/201-k8s-cluster-with-aks-applicationgateway-ingress/variables.tf
@@ -25,7 +25,7 @@ variable "virtual_network_name" {
 
 variable "virtual_network_address_prefix" {
     description = "VNET address prefix"
-    default     = "15.0.0.0/8"
+    default     = "192.168.0.0/16"
 }
 
 variable "aks_subnet_name" {
@@ -35,12 +35,12 @@ variable "aks_subnet_name" {
 
 variable "aks_subnet_address_prefix" {
     description = "Subnet address prefix."
-    default     = "15.0.0.0/16"
+    default     = "192.168.0.0/24"
 }
 
 variable "app_gateway_subnet_address_prefix" {
     description = "Subnet server IP address."
-    default     = "15.1.0.0/16"
+    default     = "192.168.1.0/24"
 }
 
 variable "app_gateway_name" {