diff --git a/specification/containerservice/resource-manager/Microsoft.ContainerService/stable/2021-08-01/managedClusters.json b/specification/containerservice/resource-manager/Microsoft.ContainerService/stable/2021-08-01/managedClusters.json
index 2c915f97670e..839eef75828a 100644
--- a/specification/containerservice/resource-manager/Microsoft.ContainerService/stable/2021-08-01/managedClusters.json
+++ b/specification/containerservice/resource-manager/Microsoft.ContainerService/stable/2021-08-01/managedClusters.json
@@ -37,7 +37,7 @@
     "/providers/Microsoft.ContainerService/operations": {
       "get": {
         "tags": [
-          "managedClusters"
+          "ManagedClusters"
         ],
         "operationId": "Operations_List",
         "summary": "Gets a list of operations.",
@@ -68,7 +68,7 @@
     "/subscriptions/{subscriptionId}/providers/Microsoft.ContainerService/locations/{location}/osOptions/default": {
       "get": {
         "tags": [
-          "managedClusters"
+          "ManagedClusters"
         ],
         "operationId": "ManagedClusters_GetOSOptions",
         "summary": "Gets supported OS options in the specified subscription.",