diff --git a/specification/cosmos-db/resource-manager/Microsoft.DocumentDB/preview/2021-03-01-preview/managedCassandra.json b/specification/cosmos-db/resource-manager/Microsoft.DocumentDB/preview/2021-03-01-preview/managedCassandra.json
index 2427fbdf349d..e92d963c7d24 100644
--- a/specification/cosmos-db/resource-manager/Microsoft.DocumentDB/preview/2021-03-01-preview/managedCassandra.json
+++ b/specification/cosmos-db/resource-manager/Microsoft.DocumentDB/preview/2021-03-01-preview/managedCassandra.json
@@ -771,7 +771,6 @@
     },
     "ClusterResource": {
       "description": "Representation of a managed Cassandra cluster.",
-      "x-ms-azure-resource": true,
       "type": "object",
       "allOf": [
         {
@@ -991,7 +990,7 @@
       "type": "object",
       "allOf": [
         {
-          "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/ProxyResource"
+          "$ref": "cosmos-db.json#/definitions/ARMProxyResource"
         }
       ],
       "properties": {
@@ -1056,10 +1055,9 @@
     "DataCenterResource": {
       "description": "A managed Cassandra data center.",
       "type": "object",
-      "x-ms-azure-resource": true,
       "allOf": [
         {
-          "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/ProxyResource"
+          "$ref": "cosmos-db.json#/definitions/ARMProxyResource"
         }
       ],
       "properties": {