diff --git a/drivers/usb/serial/bus.c b/drivers/usb/serial/bus.c
index c08a38402b93a1287562ae254d367c51da12d3e5..a47a24f8820dce01ee6d949f3167fbeb15dd3b61 100644
--- a/drivers/usb/serial/bus.c
+++ b/drivers/usb/serial/bus.c
@@ -138,7 +138,7 @@ static void free_dynids(struct usb_serial_driver *drv)
 static struct driver_attribute drv_attrs[] = {
 	__ATTR_NULL,
 };
-static inline void free_dynids(struct usb_driver *drv)
+static inline void free_dynids(struct usb_serial_driver *drv)
 {
 }
 #endif