diff --git a/rt-thread-version/rt-thread-standard/programming-manual/device-ipc/workqueue/workqueue.md b/rt-thread-version/rt-thread-standard/programming-manual/device-ipc/workqueue/workqueue.md
index b3c38dae6b9847de828ec0cb6ff3635166ab5751..21bb0c22ea0aef50f07277b2301c13bf0ef0b7b8 100644
--- a/rt-thread-version/rt-thread-standard/programming-manual/device-ipc/workqueue/workqueue.md
+++ b/rt-thread-version/rt-thread-standard/programming-manual/device-ipc/workqueue/workqueue.md
@@ -276,7 +276,7 @@ void work_func(struct rt_work *work, void *work_data)
 
 int workqueue_example(void)
 {
-    printf("hello rt-thread!\n");
+    rt_kprintf("hello rt-thread!\n");
 
     struct rt_workqueue *wq = rt_workqueue_create("my_wq", 2048, 20);
     RT_ASSERT(wq);