diff --git a/components/net/freemodbus-v1.6.0/port/portserial.c b/components/net/freemodbus-v1.6.0/port/portserial.c
index 0ba8dfbaec..3a5f8eab62 100644
--- a/components/net/freemodbus-v1.6.0/port/portserial.c
+++ b/components/net/freemodbus-v1.6.0/port/portserial.c
@@ -25,7 +25,7 @@
 #include "mb.h"
 #include "mbport.h"
 #include "rtdevice.h"
-#include "bsp.h"
+#include "board.h"
 
 /* ----------------------- Static variables ---------------------------------*/
 ALIGN(RT_ALIGN_SIZE)
diff --git a/components/net/freemodbus-v1.6.0/port/portserial_m.c b/components/net/freemodbus-v1.6.0/port/portserial_m.c
index 4dc02d92bd..6c3d4c8299 100644
--- a/components/net/freemodbus-v1.6.0/port/portserial_m.c
+++ b/components/net/freemodbus-v1.6.0/port/portserial_m.c
@@ -25,7 +25,7 @@
 #include "mb.h"
 #include "mbport.h"
 #include "rtdevice.h"
-#include "bsp.h"
+#include "board.h"
 
 #if MB_MASTER_RTU_ENABLED > 0 || MB_MASTER_ASCII_ENABLED > 0
 /* ----------------------- Static variables ---------------------------------*/
diff --git a/components/net/freemodbus-v1.6.0/port/user_mb_app.h b/components/net/freemodbus-v1.6.0/port/user_mb_app.h
index 846b9a3a48..864c3860bf 100644
--- a/components/net/freemodbus-v1.6.0/port/user_mb_app.h
+++ b/components/net/freemodbus-v1.6.0/port/user_mb_app.h
@@ -18,8 +18,6 @@
 #define S_REG_HOLDING_NREGS           100
 /* salve mode: holding register's all address */
 #define          S_HD_RESERVE                     0
-#define          S_HD_CPU_USAGE_MAJOR             1
-#define          S_HD_CPU_USAGE_MINOR             2
 /* salve mode: input register's all address */
 #define          S_IN_RESERVE                     0
 /* salve mode: coil's all address */