diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c
index d7bcd07..7ce9e9f 100644
--- a/drivers/serial/mpc52xx_uart.c
+++ b/drivers/serial/mpc52xx_uart.c
@@ -705,7 +705,7 @@
 		return -EINVAL;
 
 	if ((ser->irq != port->irq) ||
-	    (ser->io_type != SERIAL_IO_MEM) ||
+	    (ser->io_type != UPIO_MEM) ||
 	    (ser->baud_base != port->uartclk)  ||
 	    (ser->iomem_base != (void *)port->mapbase) ||
 	    (ser->hub6 != 0))