diff --git a/specification/resourcegraph/resource-manager/Microsoft.ResourceGraph/preview/2020-04-01-preview/resourcegraph.json b/specification/resourcegraph/resource-manager/Microsoft.ResourceGraph/preview/2020-04-01-preview/resourcegraph.json
index 87ee4ab7c39e..0fbf96dc2401 100644
--- a/specification/resourcegraph/resource-manager/Microsoft.ResourceGraph/preview/2020-04-01-preview/resourcegraph.json
+++ b/specification/resourcegraph/resource-manager/Microsoft.ResourceGraph/preview/2020-04-01-preview/resourcegraph.json
@@ -113,7 +113,7 @@
     "/providers/Microsoft.ResourceGraph/resourceChanges": {
       "post": {
         "description": "List changes to a resource for a given time interval.",
-        "operationId": "List_ResourceChanges",
+        "operationId": "ResourceChanges",
         "tags": [
           "Changes"
         ],
@@ -161,7 +161,7 @@
     "/providers/Microsoft.ResourceGraph/resourceChangeDetails": {
       "post": {
         "description": "Get resource change details.",
-        "operationId": "Get_ResourceChangeDetails",
+        "operationId": "ResourceChangeDetails",
         "tags": [
           "Changes"
         ],