diff --git a/class/serial/usbh_ch34x.c b/class/serial/usbh_ch34x.c
index 4e31a1af..4595bcae 100644
--- a/class/serial/usbh_ch34x.c
+++ b/class/serial/usbh_ch34x.c
@@ -8,7 +8,7 @@
 #include "usbh_ch34x.h"
 
 #undef USB_DBG_TAG
-#define USB_DBG_TAG "usbh_ch43x"
+#define USB_DBG_TAG "usbh_ch34x"
 #include "usb_log.h"
 
 struct usbh_ch34x {