diff --git a/bsp/lpc43xx/M0/applications/vbus_hw.h b/bsp/lpc43xx/M0/applications/vbus_hw.h
index cceee706b414638ad0fb60e66607586acc909c3d..850466cc451f2dfaf80d020d5736cc0e5f58fadd 100644
--- a/bsp/lpc43xx/M0/applications/vbus_hw.h
+++ b/bsp/lpc43xx/M0/applications/vbus_hw.h
@@ -7,6 +7,9 @@
  * 2015-01-07     Grissiom     init commit
  */
 
+#ifndef __VBUS_HW_H__
+#define __VBUS_HW_H__
+
 #include <rtthread.h>
 #include <board.h>
 
@@ -32,3 +35,5 @@ rt_inline void rt_vbus_smp_mb(void)
 {
     __DSB();
 }
+
+#endif /* __VBUS_HW_H__ */
diff --git a/bsp/lpc43xx/M4/applications/vbus_hw.h b/bsp/lpc43xx/M4/applications/vbus_hw.h
index cceee706b414638ad0fb60e66607586acc909c3d..850466cc451f2dfaf80d020d5736cc0e5f58fadd 100644
--- a/bsp/lpc43xx/M4/applications/vbus_hw.h
+++ b/bsp/lpc43xx/M4/applications/vbus_hw.h
@@ -7,6 +7,9 @@
  * 2015-01-07     Grissiom     init commit
  */
 
+#ifndef __VBUS_HW_H__
+#define __VBUS_HW_H__
+
 #include <rtthread.h>
 #include <board.h>
 
@@ -32,3 +35,5 @@ rt_inline void rt_vbus_smp_mb(void)
 {
     __DSB();
 }
+
+#endif /* __VBUS_HW_H__ */