diff --git a/docs/_basic/ja_opening_modals.md b/docs/_basic/ja_opening_modals.md
index c1ca60e4e..fd59010a8 100644
--- a/docs/_basic/ja_opening_modals.md
+++ b/docs/_basic/ja_opening_modals.md
@@ -16,7 +16,7 @@ order: 9
 
 ```javascript
 // コマンド起動をリッスン
-app.command('/ticket', ({ ack, payload, context }) => {
+app.command('/ticket', ({ ack, body, context }) => {
   // コマンドのリクエストを確認
   ack();
 
@@ -24,7 +24,7 @@ app.command('/ticket', ({ ack, payload, context }) => {
     const result = app.client.views.open({
       token: context.botToken,
       // 適切な trigger_id を受け取ってから 3 秒以内に渡す
-      trigger_id: payload.trigger_id,
+      trigger_id: body.trigger_id,
       // view の値をペイロードに含む
       view: {
         type: 'modal',