diff --git a/components/drivers/usb/usbdevice/class/cdc_vcom.c b/components/drivers/usb/usbdevice/class/cdc_vcom.c
index a41493cda..ee891cc98 100644
--- a/components/drivers/usb/usbdevice/class/cdc_vcom.c
+++ b/components/drivers/usb/usbdevice/class/cdc_vcom.c
@@ -14,6 +14,8 @@
 
 #include <rtthread.h>
 #include <rtdevice.h>
+#include <rthw.h>
+ 
 #include "cdc.h"
 
 static uclass_t cdc;