diff --git a/specification/billing/resource-manager/Microsoft.Billing/preview/2017-04-24-preview/examples/InvoicesExpand.json b/specification/billing/resource-manager/Microsoft.Billing/preview/2017-04-24-preview/examples/InvoicesExpand.json
index 3bdd4367a75b..e8dd72ba9303 100644
--- a/specification/billing/resource-manager/Microsoft.Billing/preview/2017-04-24-preview/examples/InvoicesExpand.json
+++ b/specification/billing/resource-manager/Microsoft.Billing/preview/2017-04-24-preview/examples/InvoicesExpand.json
@@ -3,7 +3,7 @@
     "api-version": "2017-04-24-preview",
     "subscriptionId": "subid",
     "$top": "1",
-    "$filter": "invoicePeriodStartDate le 2017-02-01",
+    "$filter": "invoicePeriodEndDate le 2017-02-01",
     "$expand": "downloadUrl"
   },
   "responses": {
@@ -31,4 +31,4 @@
       }
     }
   }
-}
\ No newline at end of file
+}