diff --git a/hw/openrisc/openrisc_sim.c b/hw/openrisc/openrisc_sim.c
index 87f9cbc300..e0da4067ba 100644
--- a/hw/openrisc/openrisc_sim.c
+++ b/hw/openrisc/openrisc_sim.c
@@ -266,7 +266,7 @@ static void openrisc_sim_serial_init(Or1ksimState *state, hwaddr base,
     }
     serial_mm_init(get_system_memory(), base, 0, serial_irq, 115200,
                    serial_hd(uart_idx),
-                   DEVICE_NATIVE_ENDIAN);
+                   DEVICE_BIG_ENDIAN);
 
     /* Add device tree node for serial. */
     nodename = g_strdup_printf("/serial@%" HWADDR_PRIx, base);
diff --git a/hw/openrisc/virt.c b/hw/openrisc/virt.c
index 22ae057992..7b60bf8509 100644
--- a/hw/openrisc/virt.c
+++ b/hw/openrisc/virt.c
@@ -236,7 +236,7 @@ static void openrisc_virt_serial_init(OR1KVirtState *state, hwaddr base,
     qemu_irq serial_irq = get_per_cpu_irq(cpus, num_cpus, irq_pin);
 
     serial_mm_init(get_system_memory(), base, 0, serial_irq, 115200,
-                   serial_hd(0), DEVICE_NATIVE_ENDIAN);
+                   serial_hd(0), DEVICE_BIG_ENDIAN);
 
     /* Add device tree node for serial. */
     nodename = g_strdup_printf("/serial@%" HWADDR_PRIx, base);