diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 1c0a7b83b545..b48047f50caf 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -426,6 +426,7 @@ static void pc_i440fx_machine_options(MachineClass *m)
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
     pcmc->default_nic_model = "e1000";
     pcmc->pci_root_uid = 0;
+    pcmc->default_cpu_version = 1;
 
     m->family = "pc_piix";
     m->desc = "Standard PC (i440FX + PIIX, 1996)";
@@ -437,11 +438,9 @@ static void pc_i440fx_machine_options(MachineClass *m)
 
 static void pc_i440fx_8_0_machine_options(MachineClass *m)
 {
-    PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
     pc_i440fx_machine_options(m);
     m->alias = "pc";
     m->is_default = true;
-    pcmc->default_cpu_version = 1;
 }
 
 DEFINE_I440FX_MACHINE(v8_0, "pc-i440fx-8.0", NULL,
@@ -463,8 +462,6 @@ static void pc_i440fx_7_1_machine_options(MachineClass *m)
 {
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
     pc_i440fx_7_2_machine_options(m);
-    m->alias = NULL;
-    m->is_default = false;
     pcmc->legacy_no_rng_seed = true;
     compat_props_add(m->compat_props, hw_compat_7_1, hw_compat_7_1_len);
     compat_props_add(m->compat_props, pc_compat_7_1, pc_compat_7_1_len);
@@ -477,8 +474,6 @@ static void pc_i440fx_7_0_machine_options(MachineClass *m)
 {
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
     pc_i440fx_7_1_machine_options(m);
-    m->alias = NULL;
-    m->is_default = false;
     pcmc->enforce_amd_1tb_hole = false;
     compat_props_add(m->compat_props, hw_compat_7_0, hw_compat_7_0_len);
     compat_props_add(m->compat_props, pc_compat_7_0, pc_compat_7_0_len);
@@ -490,8 +485,6 @@ DEFINE_I440FX_MACHINE(v7_0, "pc-i440fx-7.0", NULL,
 static void pc_i440fx_6_2_machine_options(MachineClass *m)
 {
     pc_i440fx_7_0_machine_options(m);
-    m->alias = NULL;
-    m->is_default = false;
     compat_props_add(m->compat_props, hw_compat_6_2, hw_compat_6_2_len);
     compat_props_add(m->compat_props, pc_compat_6_2, pc_compat_6_2_len);
 }
@@ -502,8 +495,6 @@ DEFINE_I440FX_MACHINE(v6_2, "pc-i440fx-6.2", NULL,
 static void pc_i440fx_6_1_machine_options(MachineClass *m)
 {
     pc_i440fx_6_2_machine_options(m);
-    m->alias = NULL;
-    m->is_default = false;
     compat_props_add(m->compat_props, hw_compat_6_1, hw_compat_6_1_len);
     compat_props_add(m->compat_props, pc_compat_6_1, pc_compat_6_1_len);
     m->smp_props.prefer_sockets = true;
@@ -515,8 +506,6 @@ DEFINE_I440FX_MACHINE(v6_1, "pc-i440fx-6.1", NULL,
 static void pc_i440fx_6_0_machine_options(MachineClass *m)
 {
     pc_i440fx_6_1_machine_options(m);
-    m->alias = NULL;
-    m->is_default = false;
     compat_props_add(m->compat_props, hw_compat_6_0, hw_compat_6_0_len);
     compat_props_add(m->compat_props, pc_compat_6_0, pc_compat_6_0_len);
 }
@@ -527,8 +516,6 @@ DEFINE_I440FX_MACHINE(v6_0, "pc-i440fx-6.0", NULL,
 static void pc_i440fx_5_2_machine_options(MachineClass *m)
 {
     pc_i440fx_6_0_machine_options(m);
-    m->alias = NULL;
-    m->is_default = false;
     compat_props_add(m->compat_props, hw_compat_5_2, hw_compat_5_2_len);
     compat_props_add(m->compat_props, pc_compat_5_2, pc_compat_5_2_len);
 }
@@ -541,8 +528,6 @@ static void pc_i440fx_5_1_machine_options(MachineClass *m)
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
 
     pc_i440fx_5_2_machine_options(m);
-    m->alias = NULL;
-    m->is_default = false;
     compat_props_add(m->compat_props, hw_compat_5_1, hw_compat_5_1_len);
     compat_props_add(m->compat_props, pc_compat_5_1, pc_compat_5_1_len);
     pcmc->kvmclock_create_always = false;
@@ -555,8 +540,6 @@ DEFINE_I440FX_MACHINE(v5_1, "pc-i440fx-5.1", NULL,
 static void pc_i440fx_5_0_machine_options(MachineClass *m)
 {
     pc_i440fx_5_1_machine_options(m);
-    m->alias = NULL;
-    m->is_default = false;
     m->numa_mem_supported = true;
     compat_props_add(m->compat_props, hw_compat_5_0, hw_compat_5_0_len);
     compat_props_add(m->compat_props, pc_compat_5_0, pc_compat_5_0_len);
@@ -569,8 +552,6 @@ DEFINE_I440FX_MACHINE(v5_0, "pc-i440fx-5.0", NULL,
 static void pc_i440fx_4_2_machine_options(MachineClass *m)
 {
     pc_i440fx_5_0_machine_options(m);
-    m->alias = NULL;
-    m->is_default = false;
     compat_props_add(m->compat_props, hw_compat_4_2, hw_compat_4_2_len);
     compat_props_add(m->compat_props, pc_compat_4_2, pc_compat_4_2_len);
 }
@@ -581,8 +562,6 @@ DEFINE_I440FX_MACHINE(v4_2, "pc-i440fx-4.2", NULL,
 static void pc_i440fx_4_1_machine_options(MachineClass *m)
 {
     pc_i440fx_4_2_machine_options(m);
-    m->alias = NULL;
-    m->is_default = false;
     compat_props_add(m->compat_props, hw_compat_4_1, hw_compat_4_1_len);
     compat_props_add(m->compat_props, pc_compat_4_1, pc_compat_4_1_len);
 }
@@ -594,8 +573,6 @@ static void pc_i440fx_4_0_machine_options(MachineClass *m)
 {
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
     pc_i440fx_4_1_machine_options(m);
-    m->alias = NULL;
-    m->is_default = false;
     pcmc->default_cpu_version = CPU_VERSION_LEGACY;
     compat_props_add(m->compat_props, hw_compat_4_0, hw_compat_4_0_len);
     compat_props_add(m->compat_props, pc_compat_4_0, pc_compat_4_0_len);
@@ -609,9 +586,7 @@ static void pc_i440fx_3_1_machine_options(MachineClass *m)
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
 
     pc_i440fx_4_0_machine_options(m);
-    m->is_default = false;
     m->smbus_no_migration_support = true;
-    m->alias = NULL;
     pcmc->pvh_enabled = false;
     compat_props_add(m->compat_props, hw_compat_3_1, hw_compat_3_1_len);
     compat_props_add(m->compat_props, pc_compat_3_1, pc_compat_3_1_len);
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 10bb49f679b0..67ceb04bcc2d 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -355,6 +355,7 @@ static void pc_q35_machine_options(MachineClass *m)
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
     pcmc->default_nic_model = "e1000e";
     pcmc->pci_root_uid = 0;
+    pcmc->default_cpu_version = 1;
 
     m->family = "pc_q35";
     m->desc = "Standard PC (Q35 + ICH9, 2009)";
@@ -372,10 +373,8 @@ static void pc_q35_machine_options(MachineClass *m)
 
 static void pc_q35_8_0_machine_options(MachineClass *m)
 {
-    PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
     pc_q35_machine_options(m);
     m->alias = "q35";
-    pcmc->default_cpu_version = 1;
 }
 
 DEFINE_Q35_MACHINE(v8_0, "pc-q35-8.0", NULL,
@@ -396,7 +395,6 @@ static void pc_q35_7_1_machine_options(MachineClass *m)
 {
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
     pc_q35_7_2_machine_options(m);
-    m->alias = NULL;
     pcmc->legacy_no_rng_seed = true;
     compat_props_add(m->compat_props, hw_compat_7_1, hw_compat_7_1_len);
     compat_props_add(m->compat_props, pc_compat_7_1, pc_compat_7_1_len);
@@ -409,7 +407,6 @@ static void pc_q35_7_0_machine_options(MachineClass *m)
 {
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
     pc_q35_7_1_machine_options(m);
-    m->alias = NULL;
     pcmc->enforce_amd_1tb_hole = false;
     compat_props_add(m->compat_props, hw_compat_7_0, hw_compat_7_0_len);
     compat_props_add(m->compat_props, pc_compat_7_0, pc_compat_7_0_len);
@@ -421,7 +418,6 @@ DEFINE_Q35_MACHINE(v7_0, "pc-q35-7.0", NULL,
 static void pc_q35_6_2_machine_options(MachineClass *m)
 {
     pc_q35_7_0_machine_options(m);
-    m->alias = NULL;
     compat_props_add(m->compat_props, hw_compat_6_2, hw_compat_6_2_len);
     compat_props_add(m->compat_props, pc_compat_6_2, pc_compat_6_2_len);
 }
@@ -432,7 +428,6 @@ DEFINE_Q35_MACHINE(v6_2, "pc-q35-6.2", NULL,
 static void pc_q35_6_1_machine_options(MachineClass *m)
 {
     pc_q35_6_2_machine_options(m);
-    m->alias = NULL;
     compat_props_add(m->compat_props, hw_compat_6_1, hw_compat_6_1_len);
     compat_props_add(m->compat_props, pc_compat_6_1, pc_compat_6_1_len);
     m->smp_props.prefer_sockets = true;
@@ -444,7 +439,6 @@ DEFINE_Q35_MACHINE(v6_1, "pc-q35-6.1", NULL,
 static void pc_q35_6_0_machine_options(MachineClass *m)
 {
     pc_q35_6_1_machine_options(m);
-    m->alias = NULL;
     compat_props_add(m->compat_props, hw_compat_6_0, hw_compat_6_0_len);
     compat_props_add(m->compat_props, pc_compat_6_0, pc_compat_6_0_len);
 }
@@ -455,7 +449,6 @@ DEFINE_Q35_MACHINE(v6_0, "pc-q35-6.0", NULL,
 static void pc_q35_5_2_machine_options(MachineClass *m)
 {
     pc_q35_6_0_machine_options(m);
-    m->alias = NULL;
     compat_props_add(m->compat_props, hw_compat_5_2, hw_compat_5_2_len);
     compat_props_add(m->compat_props, pc_compat_5_2, pc_compat_5_2_len);
 }
@@ -468,7 +461,6 @@ static void pc_q35_5_1_machine_options(MachineClass *m)
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
 
     pc_q35_5_2_machine_options(m);
-    m->alias = NULL;
     compat_props_add(m->compat_props, hw_compat_5_1, hw_compat_5_1_len);
     compat_props_add(m->compat_props, pc_compat_5_1, pc_compat_5_1_len);
     pcmc->kvmclock_create_always = false;
@@ -481,7 +473,6 @@ DEFINE_Q35_MACHINE(v5_1, "pc-q35-5.1", NULL,
 static void pc_q35_5_0_machine_options(MachineClass *m)
 {
     pc_q35_5_1_machine_options(m);
-    m->alias = NULL;
     m->numa_mem_supported = true;
     compat_props_add(m->compat_props, hw_compat_5_0, hw_compat_5_0_len);
     compat_props_add(m->compat_props, pc_compat_5_0, pc_compat_5_0_len);
@@ -494,7 +485,6 @@ DEFINE_Q35_MACHINE(v5_0, "pc-q35-5.0", NULL,
 static void pc_q35_4_2_machine_options(MachineClass *m)
 {
     pc_q35_5_0_machine_options(m);
-    m->alias = NULL;
     compat_props_add(m->compat_props, hw_compat_4_2, hw_compat_4_2_len);
     compat_props_add(m->compat_props, pc_compat_4_2, pc_compat_4_2_len);
 }
@@ -505,7 +495,6 @@ DEFINE_Q35_MACHINE(v4_2, "pc-q35-4.2", NULL,
 static void pc_q35_4_1_machine_options(MachineClass *m)
 {
     pc_q35_4_2_machine_options(m);
-    m->alias = NULL;
     compat_props_add(m->compat_props, hw_compat_4_1, hw_compat_4_1_len);
     compat_props_add(m->compat_props, pc_compat_4_1, pc_compat_4_1_len);
 }
@@ -517,7 +506,6 @@ static void pc_q35_4_0_1_machine_options(MachineClass *m)
 {
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
     pc_q35_4_1_machine_options(m);
-    m->alias = NULL;
     pcmc->default_cpu_version = CPU_VERSION_LEGACY;
     /*
      * This is the default machine for the 4.0-stable branch. It is basically
@@ -535,7 +523,6 @@ static void pc_q35_4_0_machine_options(MachineClass *m)
 {
     pc_q35_4_0_1_machine_options(m);
     m->default_kernel_irqchip_split = true;
-    m->alias = NULL;
     /* Compat props are applied by the 4.0.1 machine */
 }
 
@@ -549,7 +536,6 @@ static void pc_q35_3_1_machine_options(MachineClass *m)
     pc_q35_4_0_machine_options(m);
     m->default_kernel_irqchip_split = false;
     m->smbus_no_migration_support = true;
-    m->alias = NULL;
     pcmc->pvh_enabled = false;
     compat_props_add(m->compat_props, hw_compat_3_1, hw_compat_3_1_len);
     compat_props_add(m->compat_props, pc_compat_3_1, pc_compat_3_1_len);
