diff --git a/hw/imx_serial.c b/hw/imx_serial.c
index d4eae43..dcd125f 100644
--- a/hw/imx_serial.c
+++ b/hw/imx_serial.c
@@ -183,7 +183,7 @@
 
 }
 
-static uint64_t imx_serial_read(void *opaque, target_phys_addr_t offset,
+static uint64_t imx_serial_read(void *opaque, hwaddr offset,
                                 unsigned size)
 {
     IMXSerialState *s = (IMXSerialState *)opaque;
@@ -244,7 +244,7 @@
     }
 }
 
-static void imx_serial_write(void *opaque, target_phys_addr_t offset,
+static void imx_serial_write(void *opaque, hwaddr offset,
                       uint64_t value, unsigned size)
 {
     IMXSerialState *s = (IMXSerialState *)opaque;
@@ -401,7 +401,7 @@
     return 0;
 }
 
-void imx_serial_create(int uart, const target_phys_addr_t addr, qemu_irq irq)
+void imx_serial_create(int uart, const hwaddr addr, qemu_irq irq)
 {
     DeviceState *dev;
     SysBusDevice *bus;
@@ -427,7 +427,7 @@
     qdev_prop_set_chr(dev, "chardev", chr);
     bus = sysbus_from_qdev(dev);
     qdev_init_nofail(dev);
-    if (addr != (target_phys_addr_t)-1) {
+    if (addr != (hwaddr)-1) {
         sysbus_mmio_map(bus, 0, addr);
     }
     sysbus_connect_irq(bus, 0, irq);