diff --git a/drivers/usb/gadget/function/f_mtp.c b/drivers/usb/gadget/function/f_mtp.c
index bf7460f25e61..4a0b3a0aa65e 100644
--- a/drivers/usb/gadget/function/f_mtp.c
+++ b/drivers/usb/gadget/function/f_mtp.c
@@ -1504,6 +1504,7 @@ mtp_function_unbind(struct usb_configuration *c, struct usb_function *f)
 	struct usb_request *req;
 	int i;
 
+	mtp_string_defs[INTERFACE_STRING_INDEX].id = 0;
 	mutex_lock(&dev->read_mutex);
 	while ((req = mtp_req_get(dev, &dev->tx_idle)))
 		mtp_request_free(req, dev->ep_in);