diff --git a/hw/core/qdev-properties.c b/hw/core/qdev-properties.c
index 6ab4265..fa3617d 100644
--- a/hw/core/qdev-properties.c
+++ b/hw/core/qdev-properties.c
@@ -1010,7 +1010,8 @@
     object_property_set_str(OBJECT(dev), value, name, &error_abort);
 }
 
-void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value)
+void qdev_prop_set_macaddr(DeviceState *dev, const char *name,
+                           const uint8_t *value)
 {
     char str[2 * 6 + 5 + 1];
     snprintf(str, sizeof(str), "%02x:%02x:%02x:%02x:%02x:%02x",
diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h
index 7ac3153..1d69fa7 100644
--- a/include/hw/qdev-properties.h
+++ b/include/hw/qdev-properties.h
@@ -188,7 +188,8 @@
 void qdev_prop_set_netdev(DeviceState *dev, const char *name, NetClientState *value);
 void qdev_prop_set_drive(DeviceState *dev, const char *name,
                          BlockBackend *value, Error **errp);
-void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value);
+void qdev_prop_set_macaddr(DeviceState *dev, const char *name,
+                           const uint8_t *value);
 void qdev_prop_set_enum(DeviceState *dev, const char *name, int value);
 /* FIXME: Remove opaque pointer properties.  */
 void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value);