diff --git a/components/lib/datatable/DataTable.d.ts b/components/lib/datatable/DataTable.d.ts
index 682e06a6c..c51576f03 100755
--- a/components/lib/datatable/DataTable.d.ts
+++ b/components/lib/datatable/DataTable.d.ts
@@ -956,7 +956,7 @@ export interface DataTableProps {
     /**
      * Custom function to export data.
      */
-    exportFunction?(options: DataTableExportFunctionOptions): any;
+    exportFunction?: (options: DataTableExportFunctionOptions) => any;
     /**
      * When enabled, columns can be resized using drag and drop.
      * @defaultValue false