diff --git a/specification/machinelearningservices/resource-manager/Microsoft.MachineLearningServices/stable/2021-10-01/mfe.json b/specification/machinelearningservices/resource-manager/Microsoft.MachineLearningServices/stable/2021-10-01/mfe.json
index 550b94c46d1f..9578158dc9df 100644
--- a/specification/machinelearningservices/resource-manager/Microsoft.MachineLearningServices/stable/2021-10-01/mfe.json
+++ b/specification/machinelearningservices/resource-manager/Microsoft.MachineLearningServices/stable/2021-10-01/mfe.json
@@ -8525,6 +8525,7 @@
         },
         "requestSettings": {
           "description": "Request settings for the deployment.",
+          "default": {},
           "$ref": "#/definitions/OnlineRequestSettings",
           "x-nullable": true
         },