diff --git a/typescript/widget/downlist/item.downlistgroup.ts b/typescript/widget/downlist/item.downlistgroup.ts
index 8c85305ea..bf7be317f 100644
--- a/typescript/widget/downlist/item.downlistgroup.ts
+++ b/typescript/widget/downlist/item.downlistgroup.ts
@@ -4,6 +4,11 @@ export declare class DownListGroupItem extends BasicButton {
     static xtype: string;
     static EVENT_CHANGE: string;
 
+    props: {
+        iconCls1: string;
+        iconCls2: string;
+    } & BasicButton['props'];
+
     doRedMark(...args: any[]): void;
 
     unRedMark(...args: any[]): void;