diff --git a/bsp/stm32/stm32f746-st-disco/board/ports/drv_qspi_flash.c b/bsp/stm32/stm32f746-st-disco/board/ports/drv_qspi_flash.c
index 2739ad02f7..ca7641f866 100644
--- a/bsp/stm32/stm32f746-st-disco/board/ports/drv_qspi_flash.c
+++ b/bsp/stm32/stm32f746-st-disco/board/ports/drv_qspi_flash.c
@@ -5,7 +5,7 @@
  *
  * Change Logs:
  * Date           Author       Notes
- * 2019-01-26     jinsheng    first version
+ * 2019-01-26     jinsheng     first version
  */
  
 #include <board.h>
diff --git a/bsp/stm32/stm32f746-st-disco/board/ports/phy_reset.c b/bsp/stm32/stm32f746-st-disco/board/ports/phy_reset.c
index c9ad809338..3d5f75c7f0 100644
--- a/bsp/stm32/stm32f746-st-disco/board/ports/phy_reset.c
+++ b/bsp/stm32/stm32f746-st-disco/board/ports/phy_reset.c
@@ -5,7 +5,7 @@
  *
  * Change Logs:
  * Date           Author       Notes
- * 2019-02-16     jinsheng   first version
+ * 2019-02-16     jinsheng     first version
  */
 
 #include <rtthread.h>
diff --git a/bsp/stm32/stm32f746-st-disco/board/ports/sdcard_port.c b/bsp/stm32/stm32f746-st-disco/board/ports/sdcard_port.c
index 4a7d2d45db..90cfd4d1a4 100644
--- a/bsp/stm32/stm32f746-st-disco/board/ports/sdcard_port.c
+++ b/bsp/stm32/stm32f746-st-disco/board/ports/sdcard_port.c
@@ -5,7 +5,7 @@
  *
  * Change Logs:
  * Date           Author       Notes
- * 2019-02-17     jinsheng   add sdcard port file
+ * 2019-02-17     jinsheng     add sdcard port file
  */
 
 #include <rtthread.h>
diff --git a/bsp/stm32/stm32f746-st-disco/board/ports/sdram_port.h b/bsp/stm32/stm32f746-st-disco/board/ports/sdram_port.h
index b7afd04234..7a3bcbf22b 100644
--- a/bsp/stm32/stm32f746-st-disco/board/ports/sdram_port.h
+++ b/bsp/stm32/stm32f746-st-disco/board/ports/sdram_port.h
@@ -5,7 +5,7 @@
  *
  * Change Logs:
  * Date           Author       Notes
- * 2019-02-16     jinsheng   The first version for STM32F7xx
+ * 2019-02-16     jinsheng     The first version for STM32F7xx
  */
 
 #ifndef __SDRAM_PORT_H__