diff --git a/samples/manage/azure-sql-db-managed-instance/prepare-subnet/prepareSubnet.ps1 b/samples/manage/azure-sql-db-managed-instance/prepare-subnet/prepareSubnet.ps1
index cbfffa07..22e9960c 100644
--- a/samples/manage/azure-sql-db-managed-instance/prepare-subnet/prepareSubnet.ps1
+++ b/samples/manage/azure-sql-db-managed-instance/prepare-subnet/prepareSubnet.ps1
@@ -485,7 +485,7 @@ function VerifyNSG {
         $result = @{ 
             nsgSecurityRules = New-Object "$NScollections.List``1[$NSnetworkModels.PSSecurityRule]"
             failedSecurityRules = New-Object "$NScollections.List``1[$NSnetworkModels.PSSecurityRule]"
-            success = $true 
+            success = $false 
         }
         Write-Host("Verifying Network security group for subnet '{0}'."-f $subnet.Name)
         $nsg = LoadNetworkSecurityGroup $subnet