diff --git a/components/lib/datatable/DataTable.d.ts b/components/lib/datatable/DataTable.d.ts
index b14382868..6df41b87e 100755
--- a/components/lib/datatable/DataTable.d.ts
+++ b/components/lib/datatable/DataTable.d.ts
@@ -378,7 +378,7 @@ export interface DataTableRowExpandEvent {
     /**
      * Expanded row data
      */
-    data: any[];
+    data: any;
 }
 
 /**