diff --git a/specification/compute/resource-manager/Microsoft.Compute/stable/2020-06-01/compute.json b/specification/compute/resource-manager/Microsoft.Compute/stable/2020-06-01/compute.json
index 2528535c2435..560d81fea158 100644
--- a/specification/compute/resource-manager/Microsoft.Compute/stable/2020-06-01/compute.json
+++ b/specification/compute/resource-manager/Microsoft.Compute/stable/2020-06-01/compute.json
@@ -8514,7 +8514,7 @@
         },
         "requireGuestProvisionSignal": {
           "type": "boolean",
-          "description": "Specifies whether the guest provision signal is required to infer provision success of the virtual machine."
+          "description": "Specifies whether the guest provision signal is required to infer provision success of the virtual machine.  **Note: This property is for private testing only, and all customers must not set the property to false.**"
         }
       },
       "description": "Specifies the operating system settings for the virtual machine. Some of the settings cannot be changed once VM is provisioned."