diff --git a/bsp/stm32/libraries/HAL_Drivers/drv_usart.c b/bsp/stm32/libraries/HAL_Drivers/drv_usart.c
index 06c1d81dfda7b37e67b87a09c3c08db666bb929b..6eb6fafdb93da56dcccf556b4acf4bd12ffa5cdc 100644
--- a/bsp/stm32/libraries/HAL_Drivers/drv_usart.c
+++ b/bsp/stm32/libraries/HAL_Drivers/drv_usart.c
@@ -885,7 +885,7 @@ static void stm32_dma_config(struct rt_serial_device *serial, rt_ubase_t flag)
     {
         rt_uint32_t tmpreg = 0x00U;
 #if defined(SOC_SERIES_STM32F1) || defined(SOC_SERIES_STM32F0) || defined(SOC_SERIES_STM32G0) \
-    || defined(SOC_SERIES_STM32L0)|| defined(SOC_SERIES_STM32F3)
+    || defined(SOC_SERIES_STM32L0)|| defined(SOC_SERIES_STM32F3) || defined(SOC_SERIES_STM32L1)
         /* enable DMA clock && Delay after an RCC peripheral clock enabling*/
         SET_BIT(RCC->AHBENR, dma_config->dma_rcc);
         tmpreg = READ_BIT(RCC->AHBENR, dma_config->dma_rcc);
@@ -919,7 +919,7 @@ static void stm32_dma_config(struct rt_serial_device *serial, rt_ubase_t flag)
         __HAL_LINKDMA(&(uart->handle), hdmatx, uart->dma_tx.handle);
     }
 
-#if defined(SOC_SERIES_STM32F1) || defined(SOC_SERIES_STM32F0) || defined(SOC_SERIES_STM32L0)|| defined(SOC_SERIES_STM32F3)
+#if defined(SOC_SERIES_STM32F1) || defined(SOC_SERIES_STM32F0) || defined(SOC_SERIES_STM32L0)|| defined(SOC_SERIES_STM32F3) || defined(SOC_SERIES_STM32L1)
     DMA_Handle->Instance                 = dma_config->Instance;
 #elif defined(SOC_SERIES_STM32F4) || defined(SOC_SERIES_STM32F7)
     DMA_Handle->Instance                 = dma_config->Instance;