diff --git a/bsp/K60Fxxxx/drivers/drv_uart.c b/bsp/K60Fxxxx/drivers/drv_uart.c
index 2ce8b0f9a..5452ccb8c 100644
--- a/bsp/K60Fxxxx/drivers/drv_uart.c
+++ b/bsp/K60Fxxxx/drivers/drv_uart.c
@@ -218,7 +218,9 @@ static const struct rt_uart_ops _k60_ops =
 
 void UART5_RX_TX_IRQHandler(void)
 {
+    rt_interrupt_enter();
     rt_hw_serial_isr((struct rt_serial_device*)&_k60_serial);
+    rt_interrupt_leave();
 }