diff --git a/rt-thread-version/rt-thread-standard/programming-manual/device/watchdog/watchdog.md b/rt-thread-version/rt-thread-standard/programming-manual/device/watchdog/watchdog.md
index eec93f2e5bbfa31e16019559075560cb6628136e..363d9b8a7e106b8fc3182acc8d004fbf3e64505d 100644
--- a/rt-thread-version/rt-thread-standard/programming-manual/device/watchdog/watchdog.md
+++ b/rt-thread-version/rt-thread-standard/programming-manual/device/watchdog/watchdog.md
@@ -115,7 +115,7 @@ wdg_dev = rt_device_find(WDT_DEVICE_NAME);
 rt_device_init(wdg_dev);
 
 /* 设置看门狗溢出时间 */
-rt_device_control(wdg_dev, RT_DEVICE_CTRL_WDT_SET_TIMEOUT, (void *)timeout);
+rt_device_control(wdg_dev, RT_DEVICE_CTRL_WDT_SET_TIMEOUT, &timeout);
 /* 设置空闲线程回调函数 */
 rt_thread_idle_sethook(idle_hook);
 ```