diff --git a/bsp/lpc43xx/drivers/drv_uart.c b/bsp/lpc43xx/drivers/drv_uart.c
index 58a385b8b1c56aeb6cf80be6ca0fddcace37fab9..9c1f0ada8c97bf0dc4db0fa9416e28af4e63537c 100644
--- a/bsp/lpc43xx/drivers/drv_uart.c
+++ b/bsp/lpc43xx/drivers/drv_uart.c
@@ -244,8 +244,6 @@ void rt_hw_uart_init(void)
     LPC_USART0->DLM    = 0x00;
     LPC_USART0->FDR    = 0xC1;
     LPC_USART0->LCR    = 0x03;            /* DLAB = 0                           */
-    /* enable the receive interrupt */
-    LPC_USART0->IER |= UART_IER_RBRINT_EN;
     /* preemption = 1, sub-priority = 1 */
     NVIC_SetPriority(uart->USART_IRQn, ((0x01 << 3) | 0x01));
 
@@ -297,8 +295,7 @@ void rt_hw_uart_init(void)
     LPC_USART2->DLM    = 0x00;
     LPC_USART2->FDR    = 0xC1;
     LPC_USART2->LCR    = 0x03;            /* DLAB = 0                           */
-    /* enable the receive interrupt */
-    LPC_USART2->IER |= UART_IER_RBRINT_EN;
+	
     /* preemption = 1, sub-priority = 1 */
     NVIC_SetPriority(uart->USART_IRQn, ((0x01 << 3) | 0x01));
 
diff --git a/bsp/xplorer4330/drivers/drv_uart.c b/bsp/xplorer4330/drivers/drv_uart.c
index 4fa489ea060e20686d5004a80bdb3c3ecb533e16..48b80ba5554f79fa2ee96207c3da47697a75dd6a 100644
--- a/bsp/xplorer4330/drivers/drv_uart.c
+++ b/bsp/xplorer4330/drivers/drv_uart.c
@@ -244,8 +244,7 @@ void rt_hw_uart_init(void)
     LPC_USART0->DLM    = 0x00;
     LPC_USART0->FDR    = 0xC1;
     LPC_USART0->LCR    = 0x03;            /* DLAB = 0                           */
-    /* enable the receive interrupt */
-    LPC_USART0->IER |= UART_IER_RBRINT_EN;
+	
     /* preemption = 1, sub-priority = 1 */
     NVIC_SetPriority(uart->USART_IRQn, ((0x01 << 3) | 0x01));
 
@@ -297,8 +296,6 @@ void rt_hw_uart_init(void)
     LPC_USART2->DLM    = 0x00;
     LPC_USART2->FDR    = 0xC1;
     LPC_USART2->LCR    = 0x03;            /* DLAB = 0                           */
-    /* enable the receive interrupt */
-    LPC_USART2->IER |= UART_IER_RBRINT_EN;
     /* preemption = 1, sub-priority = 1 */
     NVIC_SetPriority(uart->USART_IRQn, ((0x01 << 3) | 0x01));