diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 93ff49c60b..f4b0cda707 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -2134,41 +2134,11 @@ static void pc_machine_initfn(Object *obj)
 {
     PCMachineState *pcms = PC_MACHINE(obj);
 
-    object_property_add(obj, PC_MACHINE_MEMHP_REGION_SIZE, "int",
-                        pc_machine_get_hotplug_memory_region_size,
-                        NULL, NULL, NULL, &error_abort);
-
     pcms->max_ram_below_4g = 0; /* use default */
-    object_property_add(obj, PC_MACHINE_MAX_RAM_BELOW_4G, "size",
-                        pc_machine_get_max_ram_below_4g,
-                        pc_machine_set_max_ram_below_4g,
-                        NULL, NULL, &error_abort);
-    object_property_set_description(obj, PC_MACHINE_MAX_RAM_BELOW_4G,
-                                    "Maximum ram below the 4G boundary (32bit boundary)",
-                                    &error_abort);
-
     pcms->smm = ON_OFF_AUTO_AUTO;
-    object_property_add(obj, PC_MACHINE_SMM, "OnOffAuto",
-                        pc_machine_get_smm,
-                        pc_machine_set_smm,
-                        NULL, NULL, &error_abort);
-    object_property_set_description(obj, PC_MACHINE_SMM,
-                                    "Enable SMM (pc & q35)",
-                                    &error_abort);
-
     pcms->vmport = ON_OFF_AUTO_AUTO;
-    object_property_add(obj, PC_MACHINE_VMPORT, "OnOffAuto",
-                        pc_machine_get_vmport,
-                        pc_machine_set_vmport,
-                        NULL, NULL, &error_abort);
-    object_property_set_description(obj, PC_MACHINE_VMPORT,
-                                    "Enable vmport (pc & q35)",
-                                    &error_abort);
-
     /* nvdimm is disabled on default. */
     pcms->acpi_nvdimm_state.is_enabled = false;
-    object_property_add_bool(obj, PC_MACHINE_NVDIMM, pc_machine_get_nvdimm,
-                             pc_machine_set_nvdimm, &error_abort);
 }
 
 static void pc_machine_reset(void)
@@ -2303,6 +2273,32 @@ static void pc_machine_class_init(ObjectClass *oc, void *data)
     hc->unplug_request = pc_machine_device_unplug_request_cb;
     hc->unplug = pc_machine_device_unplug_cb;
     nc->nmi_monitor_handler = x86_nmi;
+
+    object_class_property_add(oc, PC_MACHINE_MEMHP_REGION_SIZE, "int",
+        pc_machine_get_hotplug_memory_region_size, NULL,
+        NULL, NULL, &error_abort);
+
+    object_class_property_add(oc, PC_MACHINE_MAX_RAM_BELOW_4G, "size",
+        pc_machine_get_max_ram_below_4g, pc_machine_set_max_ram_below_4g,
+        NULL, NULL, &error_abort);
+
+    object_class_property_set_description(oc, PC_MACHINE_MAX_RAM_BELOW_4G,
+        "Maximum ram below the 4G boundary (32bit boundary)", &error_abort);
+
+    object_class_property_add(oc, PC_MACHINE_SMM, "OnOffAuto",
+        pc_machine_get_smm, pc_machine_set_smm,
+        NULL, NULL, &error_abort);
+    object_class_property_set_description(oc, PC_MACHINE_SMM,
+        "Enable SMM (pc & q35)", &error_abort);
+
+    object_class_property_add(oc, PC_MACHINE_VMPORT, "OnOffAuto",
+        pc_machine_get_vmport, pc_machine_set_vmport,
+        NULL, NULL, &error_abort);
+    object_class_property_set_description(oc, PC_MACHINE_VMPORT,
+        "Enable vmport (pc & q35)", &error_abort);
+
+    object_class_property_add_bool(oc, PC_MACHINE_NVDIMM,
+        pc_machine_get_nvdimm, pc_machine_set_nvdimm, &error_abort);
 }
 
 static const TypeInfo pc_machine_info = {