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 2739ad02f7d09637304380728f94f9159fe33723..ca7641f866b28cdca26c3d9b383e5f8202d596ae 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 c9ad80933888cc75acd3054302670d6d9a6d2b72..3d5f75c7f0e68b6dc9ae695bc7ca77496bd8fcc5 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 4a7d2d45dbf45e5f32fc507935b26463ce367910..90cfd4d1a409a2233cded11c0d4e4358873149fc 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 b7afd042346e4dbf4cb84ec5056299393520cd6f..7a3bcbf22b1b30e511c8ca2ee96ebd3cde82f2d8 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__