diff --git a/specification/eventgrid/resource-manager/Microsoft.EventGrid/preview/2018-05-01-preview/EventGrid.json b/specification/eventgrid/resource-manager/Microsoft.EventGrid/preview/2018-05-01-preview/EventGrid.json
index ab94bdb2ba94..6b8170656987 100644
--- a/specification/eventgrid/resource-manager/Microsoft.EventGrid/preview/2018-05-01-preview/EventGrid.json
+++ b/specification/eventgrid/resource-manager/Microsoft.EventGrid/preview/2018-05-01-preview/EventGrid.json
@@ -1533,7 +1533,7 @@
                         "name": "EventDeliverySchema",
                         "modelAsString": true
                     },
-                    "default": "EventGridSchema"
+                    "default": "InputEventSchema"
                 },
                 "retryPolicy": {
                     "$ref": "#/definitions/RetryPolicy",
@@ -1848,8 +1848,7 @@
                     "x-ms-enum": {
                         "name": "EventDeliverySchema",
                         "modelAsString": true
-                    },
-                    "default": "EventGridSchema"
+                    }
                 },
                 "retryPolicy": {
                     "$ref": "#/definitions/RetryPolicy",