diff --git a/bsp/nxp/imx/imx6ull-smart/drivers/board.c b/bsp/nxp/imx/imx6ull-smart/drivers/board.c
index d95362c591..a1af47fc3e 100644
--- a/bsp/nxp/imx/imx6ull-smart/drivers/board.c
+++ b/bsp/nxp/imx/imx6ull-smart/drivers/board.c
@@ -133,5 +133,7 @@ void rt_hw_board_init(void)
     rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
 
     rt_thread_idle_sethook(idle_wfi);
+#ifdef RT_DEBUGING_ASSERT
     rt_assert_set_hook(assert_handler);
+#endif
 }
diff --git a/components/net/netdev/src/netdev.c b/components/net/netdev/src/netdev.c
index 8bc6e6bcca..e6398cf02e 100644
--- a/components/net/netdev/src/netdev.c
+++ b/components/net/netdev/src/netdev.c
@@ -1239,8 +1239,6 @@ int netdev_cmd_ping(char* target_name, char *netdev_name, rt_uint32_t times, rt_
 
     if (!NETDEV_PING_IS_COMMONICABLE(netdev))
     {
-        /* using first internet up status network interface device */
-        netdev = netdev_get_first_by_flags(NETDEV_FLAG_LINK_UP);
         if (netdev == RT_NULL)
         {
             rt_kprintf("ping: not found available network interface device.\n");