diff --git a/schemas/2021-10-01/Microsoft.CostManagement.json b/schemas/2021-10-01/Microsoft.CostManagement.json
index a31eb0ab71..40fac7f1b6 100644
--- a/schemas/2021-10-01/Microsoft.CostManagement.json
+++ b/schemas/2021-10-01/Microsoft.CostManagement.json
@@ -719,7 +719,7 @@
     "ReportConfigDefinition": {
       "type": "object",
       "properties": {
-        "dataSet": {
+        "dataset": {
           "oneOf": [
             {
               "$ref": "#/definitions/ReportConfigDataset"