diff --git a/hw/microblaze/petalogix_s3adsp1800_mmu.c b/hw/microblaze/petalogix_s3adsp1800_mmu.c
index 581b041..6c0f5c6 100644
--- a/hw/microblaze/petalogix_s3adsp1800_mmu.c
+++ b/hw/microblaze/petalogix_s3adsp1800_mmu.c
@@ -55,6 +55,9 @@
 #define ETHLITE_IRQ         1
 #define UARTLITE_IRQ        3
 
+#define TYPE_PETALOGIX_S3ADSP1800_MACHINE \
+            MACHINE_TYPE_NAME("petalogix-s3adsp1800")
+
 static void
 petalogix_s3adsp1800_init(MachineState *machine)
 {
@@ -132,11 +135,21 @@
                            NULL);
 }
 
-static void petalogix_s3adsp1800_machine_init(MachineClass *mc)
+static void petalogix_s3adsp1800_machine_class_init(ObjectClass *oc, void *data)
 {
+    MachineClass *mc = MACHINE_CLASS(oc);
+
     mc->desc = "PetaLogix linux refdesign for xilinx Spartan 3ADSP1800";
     mc->init = petalogix_s3adsp1800_init;
     mc->is_default = true;
 }
 
-DEFINE_MACHINE("petalogix-s3adsp1800", petalogix_s3adsp1800_machine_init)
+static const TypeInfo petalogix_s3adsp1800_machine_types[] = {
+    {
+        .name           = TYPE_PETALOGIX_S3ADSP1800_MACHINE,
+        .parent         = TYPE_MACHINE,
+        .class_init     = petalogix_s3adsp1800_machine_class_init,
+    },
+};
+
+DEFINE_TYPES(petalogix_s3adsp1800_machine_types)