diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index dbcca30..9127c54 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -364,7 +364,7 @@
 
 	/* if non-blocking mode is set we can pass directly to open unless
 	   the port has just hung up or is in another error state */
-	if (tty->flags & (1 << TTY_IO_ERROR)) {
+	if (tty_io_error(tty)) {
 		port->flags |= ASYNC_NORMAL_ACTIVE;
 		return 0;
 	}