diff --git a/bsp/stm32/libraries/HAL_Drivers/drivers/drv_usart_v2.c b/bsp/stm32/libraries/HAL_Drivers/drivers/drv_usart_v2.c
index bb7dd7000d..5467053ec8 100644
--- a/bsp/stm32/libraries/HAL_Drivers/drivers/drv_usart_v2.c
+++ b/bsp/stm32/libraries/HAL_Drivers/drivers/drv_usart_v2.c
@@ -1192,10 +1192,10 @@ static void stm32_dma_config(struct rt_serial_device *serial, rt_ubase_t flag)
     else if (RT_DEVICE_FLAG_DMA_TX == flag)
     {
         DMA_Handle->Init.Direction           = DMA_MEMORY_TO_PERIPH;
-        #if defined(SOC_SERIES_STM32H5)
+#if defined(SOC_SERIES_STM32H5)
         DMA_Handle->Init.SrcInc              = DMA_SINC_INCREMENTED;
         DMA_Handle->Init.DestInc             = DMA_DINC_FIXED;
-        #endif
+#endif
         DMA_Handle->Init.Mode                = DMA_NORMAL;
     }
 #if defined(SOC_SERIES_STM32H5)
diff --git a/bsp/stm32/stm32h503-st-nucleo/board/Kconfig b/bsp/stm32/stm32h503-st-nucleo/board/Kconfig
index 2b6249a412..7ece3e0659 100644
--- a/bsp/stm32/stm32h503-st-nucleo/board/Kconfig
+++ b/bsp/stm32/stm32h503-st-nucleo/board/Kconfig
@@ -42,55 +42,55 @@ menu "On-chip Peripheral Drivers"
             config BSP_USING_UART1
                 bool "Enable UART1"
                 default n
-
+            
             config BSP_UART1_RX_USING_DMA
                 bool "Enable UART1 RX DMA"
                 depends on BSP_USING_UART1 && RT_SERIAL_USING_DMA
                 default n
-			
-			config BSP_UART1_TX_USING_DMA
+            
+            config BSP_UART1_TX_USING_DMA
                 bool "Enable UART1 TX DMA"
                 depends on BSP_USING_UART1 && RT_SERIAL_USING_DMA
                 default n
-				
-			config BSP_UART1_RX_BUFSIZE
+            
+            config BSP_UART1_RX_BUFSIZE
                 int "Set UART1 RX buffer size"
-				range 64 65535
+                range 64 65535
                 depends on RT_USING_SERIAL_V2
                 default 256
-			
-			config BSP_UART1_TX_BUFSIZE
+            
+            config BSP_UART1_TX_BUFSIZE
                 int "Set UART1 TX buffer size"
-				range 0 65535
+                range 0 65535
                 depends on RT_USING_SERIAL_V2
                 default 0
-
+            
             config BSP_USING_UART2
                 bool "Enable UART2"
                 default n
-
+            
             config BSP_UART2_RX_USING_DMA
                 bool "Enable UART2 RX DMA"
                 depends on BSP_USING_UART2 && RT_SERIAL_USING_DMA
                 default n
-			
-			config BSP_UART2_TX_USING_DMA
+            
+            config BSP_UART2_TX_USING_DMA
                 bool "Enable UART2 TX DMA"
                 depends on BSP_USING_UART2 && RT_SERIAL_USING_DMA
                 default n
-			
-			config BSP_UART2_RX_BUFSIZE
+            
+            config BSP_UART2_RX_BUFSIZE
                 int "Set UART2 RX buffer size"
-				range 64 65535
+                range 64 65535
                 depends on RT_USING_SERIAL_V2
                 default 256
-			
-			config BSP_UART2_TX_BUFSIZE
+                
+            config BSP_UART2_TX_BUFSIZE
                 int "Set UART2 TX buffer size"
-				range 0 65535
+                range 0 65535
                 depends on RT_USING_SERIAL_V2
                 default 0
-				
+            
             config BSP_USING_UART3
                 bool "Enable UART3"
                 default y
@@ -99,24 +99,24 @@ menu "On-chip Peripheral Drivers"
                 bool "Enable UART3 RX DMA"
                 depends on BSP_USING_UART3 && RT_SERIAL_USING_DMA
                 default n
-			
-			config BSP_UART3_TX_USING_DMA
+                
+            config BSP_UART3_TX_USING_DMA
                 bool "Enable UART3 TX DMA"
                 depends on BSP_USING_UART3 && RT_SERIAL_USING_DMA
                 default n
-				
-			config BSP_UART3_RX_BUFSIZE
+            
+            config BSP_UART3_RX_BUFSIZE
                 int "Set UART3 RX buffer size"
-				range 64 65535
+                range 64 65535
                 depends on RT_USING_SERIAL_V2
                 default 256
-			
-			config BSP_UART3_TX_BUFSIZE
+            
+            config BSP_UART3_TX_BUFSIZE
                 int "Set UART3 TX buffer size"
-				range 0 65535
+                range 0 65535
                 depends on RT_USING_SERIAL_V2
                 default 0
-				
+            
             config BSP_USING_LPUART1
                 bool "Enable LPUART1"
                 default n
@@ -125,21 +125,21 @@ menu "On-chip Peripheral Drivers"
                 bool "Enable LPUART1 RX DMA"
                 depends on BSP_USING_LPUART1 && RT_SERIAL_USING_DMA
                 default n
-			
-			config BSP_LPUART1_TX_USING_DMA
+            
+            config BSP_LPUART1_TX_USING_DMA
                 bool "Enable LPUART1 TX DMA"
                 depends on BSP_USING_LPUART1 && RT_SERIAL_USING_DMA
                 default n
-			
-			config BSP_LPUART1_RX_BUFSIZE
+            
+            config BSP_LPUART1_RX_BUFSIZE
                 int "Set LPUART1 RX buffer size"
-				range 64 65535
+                range 64 65535
                 depends on RT_USING_SERIAL_V2
                 default 256
-			
-			config BSP_LPUART1_TX_BUFSIZE
+                
+            config BSP_LPUART1_TX_BUFSIZE
                 int "Set LPUART1 TX buffer size"
-				range 0 65535
+                range 0 65535
                 depends on RT_USING_SERIAL_V2
                 default 0
         endif