diff --git a/include/rtthread.h b/include/rtthread.h
index 4e1bf2ae52..6cc2286c98 100644
--- a/include/rtthread.h
+++ b/include/rtthread.h
@@ -524,6 +524,7 @@ rt_err_t rt_device_flush(rt_device_t dev);
 rt_err_t rt_device_bind_driver(rt_device_t device, rt_driver_t driver, void *node);
 rt_device_t rt_device_create_since_driver(rt_driver_t drv,int device_id);
 rt_err_t rt_device_probe_and_init(rt_device_t device);
+#endif
 
 /**@}*/
 #endif