diff --git a/bsp/frdm-k64f/applications/startup.c b/bsp/frdm-k64f/applications/startup.c
index b8edf49cf5c8592a3b2ce1723c34f4c91e8512a4..bc477c3f7666c5e6e50407e08c7095415d439c70 100644
--- a/bsp/frdm-k64f/applications/startup.c
+++ b/bsp/frdm-k64f/applications/startup.c
@@ -15,7 +15,6 @@
 #include <rthw.h>
 #include <rtthread.h>
 
-#include <MK64F12.H>
 #include <board.h>
 
 /**
diff --git a/bsp/frdm-k64f/board/board.c b/bsp/frdm-k64f/board/board.c
index cdb5fcb868d6e8d29875bf41134c0b985aa1ba34..78082ebf5eb052bdd807fe48f7c81f4143fe81ab 100644
--- a/bsp/frdm-k64f/board/board.c
+++ b/bsp/frdm-k64f/board/board.c
@@ -15,7 +15,6 @@
 #include <rthw.h>
 #include <rtthread.h>
 
-#include <MK64F12.H>
 #include "board.h"
 
 #include "drv_uart.h"
diff --git a/bsp/frdm-k64f/board/board.h b/bsp/frdm-k64f/board/board.h
index 8290a03733d11f81dee5272a1bb5d328242954d2..edb32811996a8649b9a6dabf665fa90eab6d90b2 100644
--- a/bsp/frdm-k64f/board/board.h
+++ b/bsp/frdm-k64f/board/board.h
@@ -16,7 +16,7 @@
 #ifndef __BOARD_H__
 #define __BOARD_H__
 
-#include <MK64F12.H>
+#include <MK64F12.h>
 
 
 /* board configuration */
diff --git a/bsp/frdm-k64f/board/drv_uart.h b/bsp/frdm-k64f/board/drv_uart.h
index fca42557fbffaee8d1f1c97c47a3f6d99139ebc7..83580972d113a15a2d4f2bfdb46c2d32ad78faa5 100644
--- a/bsp/frdm-k64f/board/drv_uart.h
+++ b/bsp/frdm-k64f/board/drv_uart.h
@@ -19,7 +19,7 @@
 #include <rtthread.h>
 #include <rtdevice.h>
 
-#include <MK64F12.H>
+#include <MK64F12.h>
 
 #include <drivers/serial.h>
 
diff --git a/bsp/frdm-k64f/board/led.c b/bsp/frdm-k64f/board/led.c
index 1a57dcc00542ea7cac019561dde7b2fa01d60eb4..298ae7c4ad4ab5f22ebfe88289bba4478fa8f091 100644
--- a/bsp/frdm-k64f/board/led.c
+++ b/bsp/frdm-k64f/board/led.c
@@ -12,7 +12,7 @@
  *
  */
 
-#include <MK64F12.H>
+#include <MK64F12.h>
 #include "led.h"
 
 const rt_uint32_t led_mask[] = {1 << 21, 1 << 22, 1 << 26};