diff --git a/drivers/char/mxser_new.c b/drivers/char/mxser_new.c
index d311aaa52b317350e7060d407dd29cd850d102d0..8a26ce125975188446452c37ce44a8d91e1c6c3a 100644
--- a/drivers/char/mxser_new.c
+++ b/drivers/char/mxser_new.c
@@ -592,9 +592,6 @@ static int mxser_change_speed(struct mxser_port *info,
 	if (!(info->ioaddr))
 		return ret;
 
-#ifndef B921600
-#define B921600 (B460800 +1)
-#endif
 	if (mxser_set_baud_method[info->tty->index] == 0) {
 		baud = tty_get_baud_rate(info->tty);
 		mxser_set_baud(info, baud);