diff --git a/hw/openrisc/openrisc_sim.c b/hw/openrisc/openrisc_sim.c
index 73fe383c2d..26d2370e60 100644
--- a/hw/openrisc/openrisc_sim.c
+++ b/hw/openrisc/openrisc_sim.c
@@ -37,6 +37,18 @@
 
 #define KERNEL_LOAD_ADDR 0x100
 
+#define TYPE_OR1KSIM_MACHINE MACHINE_TYPE_NAME("or1k-sim")
+#define OR1KSIM_MACHINE(obj) \
+    OBJECT_CHECK(Or1ksimState, (obj), TYPE_OR1KSIM_MACHINE)
+
+typedef struct Or1ksimState {
+    /*< private >*/
+    MachineState parent_obj;
+
+    /*< public >*/
+
+} Or1ksimState;
+
 static struct openrisc_boot_info {
     uint32_t bootstrap_pc;
 } boot_info;
@@ -183,8 +195,10 @@ static void openrisc_sim_init(MachineState *machine)
     openrisc_load_kernel(ram_size, kernel_filename);
 }
 
-static void openrisc_sim_machine_init(MachineClass *mc)
+static void openrisc_sim_machine_init(ObjectClass *oc, void *data)
 {
+    MachineClass *mc = MACHINE_CLASS(oc);
+
     mc->desc = "or1k simulation";
     mc->init = openrisc_sim_init;
     mc->max_cpus = 2;
@@ -192,4 +206,16 @@ static void openrisc_sim_machine_init(MachineClass *mc)
     mc->default_cpu_type = OPENRISC_CPU_TYPE_NAME("or1200");
 }
 
-DEFINE_MACHINE("or1k-sim", openrisc_sim_machine_init)
+static const TypeInfo or1ksim_machine_typeinfo = {
+    .name       = TYPE_OR1KSIM_MACHINE,
+    .parent     = TYPE_MACHINE,
+    .class_init = openrisc_sim_machine_init,
+    .instance_size = sizeof(Or1ksimState),
+};
+
+static void or1ksim_machine_init_register_types(void)
+{
+    type_register_static(&or1ksim_machine_typeinfo);
+}
+
+type_init(or1ksim_machine_init_register_types)