diff --git a/components/lib/datatable/DataTable.d.ts b/components/lib/datatable/DataTable.d.ts
index d1b640464..83a57892a 100755
--- a/components/lib/datatable/DataTable.d.ts
+++ b/components/lib/datatable/DataTable.d.ts
@@ -128,7 +128,7 @@ export interface DataTableSortMeta {
     /**
      * Column field
      */
-    field: string;
+    field: string | ((item: any) => string) | undefined;
     /**
      * Column sort order
      */