diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index abcaeafa525fc813aa924b5eb03170642ef9e7fe..86f6dfe87f863c5c9fdfef9383675d8a7304c3db 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -2187,7 +2187,7 @@ static void ftdi_set_termios(struct tty_struct *tty,
 			dev_err(ddev, "%s urb failed to set baudrate\n", __func__);
 		mutex_unlock(&priv->cfg_lock);
 		/* Ensure RTS and DTR are raised when baudrate changed from 0 */
-		if (!old_termios || (old_termios->c_cflag & CBAUD) == B0)
+		if (old_termios && (old_termios->c_cflag & CBAUD) == B0)
 			set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
 	}