diff --git a/include/hw/boards.h b/include/hw/boards.h
index 2ad711e56db..ff5904d6fd8 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -279,13 +279,13 @@ struct MachineClass {
     int max_cpus;
     int min_cpus;
     int default_cpus;
-    unsigned int no_serial:1,
-        no_parallel:1,
-        no_floppy:1,
-        no_cdrom:1,
-        no_sdcard:1,
-        pci_allow_0_address:1,
-        legacy_fw_cfg_order:1;
+    bool no_serial;
+    bool no_parallel;
+    bool no_floppy;
+    bool no_cdrom;
+    bool no_sdcard;
+    bool pci_allow_0_address;
+    bool legacy_fw_cfg_order;
     bool is_default;
     const char *default_machine_opts;
     const char *default_boot_order;
diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c
index a18d4ed1fb1..dc91052e94d 100644
--- a/hw/arm/aspeed.c
+++ b/hw/arm/aspeed.c
@@ -1225,9 +1225,9 @@ static void aspeed_machine_class_init(ObjectClass *oc, void *data)
     AspeedMachineClass *amc = ASPEED_MACHINE_CLASS(oc);
 
     mc->init = aspeed_machine_init;
-    mc->no_floppy = 1;
-    mc->no_cdrom = 1;
-    mc->no_parallel = 1;
+    mc->no_floppy = true;
+    mc->no_cdrom = true;
+    mc->no_parallel = true;
     mc->default_ram_id = "ram";
     amc->macs_mask = ASPEED_MAC0_ON;
     amc->uart_default = ASPEED_DEV_UART5;
diff --git a/hw/arm/fby35.c b/hw/arm/fby35.c
index 83d08e578b7..04d0eb9b0c1 100644
--- a/hw/arm/fby35.c
+++ b/hw/arm/fby35.c
@@ -168,8 +168,8 @@ static void fby35_class_init(ObjectClass *oc, void *data)
 
     mc->desc = "Meta Platforms fby35";
     mc->init = fby35_init;
-    mc->no_floppy = 1;
-    mc->no_cdrom = 1;
+    mc->no_floppy = true;
+    mc->no_cdrom = true;
     mc->min_cpus = mc->max_cpus = mc->default_cpus = 3;
 
     object_class_property_add_bool(oc, "execute-in-place",
diff --git a/hw/arm/npcm7xx_boards.c b/hw/arm/npcm7xx_boards.c
index 7727e0dc4bb..c9735b357cd 100644
--- a/hw/arm/npcm7xx_boards.c
+++ b/hw/arm/npcm7xx_boards.c
@@ -461,9 +461,9 @@ static void npcm7xx_machine_class_init(ObjectClass *oc, void *data)
         NULL
     };
 
-    mc->no_floppy = 1;
-    mc->no_cdrom = 1;
-    mc->no_parallel = 1;
+    mc->no_floppy = true;
+    mc->no_cdrom = true;
+    mc->no_parallel = true;
     mc->default_ram_id = "ram";
     mc->valid_cpu_types = valid_cpu_types;
 }
diff --git a/hw/arm/raspi.c b/hw/arm/raspi.c
index a7a662f40db..665ccd9b50b 100644
--- a/hw/arm/raspi.c
+++ b/hw/arm/raspi.c
@@ -322,9 +322,9 @@ void raspi_machine_class_common_init(MachineClass *mc,
                                board_type(board_rev),
                                FIELD_EX32(board_rev, REV_CODE, REVISION));
     mc->block_default_type = IF_SD;
-    mc->no_parallel = 1;
-    mc->no_floppy = 1;
-    mc->no_cdrom = 1;
+    mc->no_parallel = true;
+    mc->no_floppy = true;
+    mc->no_cdrom = true;
     mc->default_cpus = mc->min_cpus = mc->max_cpus = cores_count(board_rev);
     mc->default_ram_size = board_ram_size(board_rev);
     mc->default_ram_id = "ram";
diff --git a/hw/arm/sbsa-ref.c b/hw/arm/sbsa-ref.c
index 6183111f2de..33c6b9ea3ec 100644
--- a/hw/arm/sbsa-ref.c
+++ b/hw/arm/sbsa-ref.c
@@ -899,7 +899,7 @@ static void sbsa_ref_class_init(ObjectClass *oc, void *data)
     mc->pci_allow_0_address = true;
     mc->minimum_page_bits = 12;
     mc->block_default_type = IF_IDE;
-    mc->no_cdrom = 1;
+    mc->no_cdrom = true;
     mc->default_nic = "e1000e";
     mc->default_ram_size = 1 * GiB;
     mc->default_ram_id = "sbsa-ref.ram";
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 99e0a68b6c5..8de57be1d1c 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -3124,7 +3124,7 @@ static void virt_machine_class_init(ObjectClass *oc, void *data)
     machine_class_allow_dynamic_sysbus_dev(mc, TYPE_TPM_TIS_SYSBUS);
 #endif
     mc->block_default_type = IF_VIRTIO;
-    mc->no_cdrom = 1;
+    mc->no_cdrom = true;
     mc->pci_allow_0_address = true;
     /* We know we will never create a pre-ARMv7 CPU which needs 1K pages */
     mc->minimum_page_bits = 12;
diff --git a/hw/arm/xilinx_zynq.c b/hw/arm/xilinx_zynq.c
index 8477b828745..ac51fb512db 100644
--- a/hw/arm/xilinx_zynq.c
+++ b/hw/arm/xilinx_zynq.c
@@ -463,7 +463,7 @@ static void zynq_machine_class_init(ObjectClass *oc, void *data)
     mc->desc = "Xilinx Zynq Platform Baseboard for Cortex-A9";
     mc->init = zynq_init;
     mc->max_cpus = ZYNQ_MAX_CPUS;
-    mc->no_sdcard = 1;
+    mc->no_sdcard = true;
     mc->ignore_memory_transaction_failures = true;
     mc->valid_cpu_types = valid_cpu_types;
     mc->default_ram_id = "zynq.ext_ram";
diff --git a/hw/avr/arduino.c b/hw/avr/arduino.c
index 48ef478346e..a7229da38aa 100644
--- a/hw/avr/arduino.c
+++ b/hw/avr/arduino.c
@@ -64,9 +64,9 @@ static void arduino_machine_class_init(ObjectClass *oc, void *data)
     mc->default_cpus = 1;
     mc->min_cpus = mc->default_cpus;
     mc->max_cpus = mc->default_cpus;
-    mc->no_floppy = 1;
-    mc->no_cdrom = 1;
-    mc->no_parallel = 1;
+    mc->no_floppy = true;
+    mc->no_cdrom = true;
+    mc->no_parallel = true;
 }
 
 static void arduino_duemilanove_class_init(ObjectClass *oc, void *data)
diff --git a/hw/core/null-machine.c b/hw/core/null-machine.c
index f586a4bef54..0655343ff59 100644
--- a/hw/core/null-machine.c
+++ b/hw/core/null-machine.c
@@ -49,11 +49,11 @@ static void machine_none_machine_init(MachineClass *mc)
     mc->max_cpus = 1;
     mc->default_ram_size = 0;
     mc->default_ram_id = "ram";
-    mc->no_serial = 1;
-    mc->no_parallel = 1;
-    mc->no_floppy = 1;
-    mc->no_cdrom = 1;
-    mc->no_sdcard = 1;
+    mc->no_serial = true;
+    mc->no_parallel = true;
+    mc->no_floppy = true;
+    mc->no_cdrom = true;
+    mc->no_sdcard = true;
 }
 
 DEFINE_MACHINE("none", machine_none_machine_init)
diff --git a/hw/i386/microvm.c b/hw/i386/microvm.c
index a8d354aabe5..c804a39debe 100644
--- a/hw/i386/microvm.c
+++ b/hw/i386/microvm.c
@@ -649,7 +649,7 @@ static void microvm_class_init(ObjectClass *oc, void *data)
     mc->family = "microvm_i386";
     mc->desc = "microvm (i386)";
     mc->units_per_default_bus = 1;
-    mc->no_floppy = 1;
+    mc->no_floppy = true;
     mc->max_cpus = 288;
     mc->has_hotpluggable_cpus = false;
     mc->auto_enable_numa_with_memhp = false;
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 04d2957adcd..0eda900b036 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -773,7 +773,7 @@ static void pc_i440fx_machine_2_5_options(MachineClass *m)
 
     pc_i440fx_machine_2_6_options(m);
     x86mc->save_tsc_khz = false;
-    m->legacy_fw_cfg_order = 1;
+    m->legacy_fw_cfg_order = true;
     compat_props_add(m->compat_props, hw_compat_2_5, hw_compat_2_5_len);
     compat_props_add(m->compat_props, pc_compat_2_5, pc_compat_2_5_len);
 }
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 77536dd697f..444c8c5f0f6 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -348,7 +348,7 @@ static void pc_q35_machine_options(MachineClass *m)
     m->default_display = "std";
     m->default_nic = "e1000e";
     m->default_kernel_irqchip_split = false;
-    m->no_floppy = 1;
+    m->no_floppy = true;
     m->max_cpus = 4096;
     m->no_parallel = !module_object_class_by_name(TYPE_ISA_PARALLEL);
     machine_class_allow_dynamic_sysbus_dev(m, TYPE_AMD_IOMMU_DEVICE);
@@ -668,7 +668,7 @@ static void pc_q35_machine_2_5_options(MachineClass *m)
 
     pc_q35_machine_2_6_options(m);
     x86mc->save_tsc_khz = false;
-    m->legacy_fw_cfg_order = 1;
+    m->legacy_fw_cfg_order = true;
     compat_props_add(m->compat_props, hw_compat_2_5, hw_compat_2_5_len);
     compat_props_add(m->compat_props, pc_compat_2_5, pc_compat_2_5_len);
 }
diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c
index 63fa0f4e32a..0077c22962b 100644
--- a/hw/loongarch/virt.c
+++ b/hw/loongarch/virt.c
@@ -1470,7 +1470,7 @@ static void virt_class_init(ObjectClass *oc, void *data)
     mc->default_kernel_irqchip_split = false;
     mc->block_default_type = IF_VIRTIO;
     mc->default_boot_order = "c";
-    mc->no_cdrom = 1;
+    mc->no_cdrom = true;
     mc->possible_cpu_arch_ids = virt_possible_cpu_arch_ids;
     mc->cpu_index_to_instance_props = virt_cpu_index_to_props;
     mc->get_default_cpu_node_id = virt_get_default_cpu_node_id;
diff --git a/hw/m68k/virt.c b/hw/m68k/virt.c
index 87ec39eeae1..09fde6cfebd 100644
--- a/hw/m68k/virt.c
+++ b/hw/m68k/virt.c
@@ -315,9 +315,9 @@ static void virt_machine_class_init(ObjectClass *oc, void *data)
     mc->desc = "QEMU M68K Virtual Machine";
     mc->init = virt_init;
     mc->default_cpu_type = M68K_CPU_TYPE_NAME("m68040");
-    mc->max_cpus = 1;
-    mc->no_floppy = 1;
-    mc->no_parallel = 1;
+    mc->max_cpus = true;
+    mc->no_floppy = true;
+    mc->no_parallel = true;
     mc->default_ram_id = "m68k_virt.ram";
 }
 
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 11fd477b71b..4897a711259 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -2877,7 +2877,7 @@ static void pnv_machine_class_init(ObjectClass *oc, void *data)
     mc->max_cpus = MAX_CPUS;
     /* Pnv provides a AHCI device for storage */
     mc->block_default_type = IF_IDE;
-    mc->no_parallel = 1;
+    mc->no_parallel = true;
     mc->default_boot_order = NULL;
     /*
      * RAM defaults to less than 2048 for 32-bit hosts, and large
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 623842f8064..5bbab1d470f 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -4593,7 +4593,7 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data)
      */
     mc->max_cpus = SPAPR_IRQ_NR_IPIS;
 
-    mc->no_parallel = 1;
+    mc->no_parallel = true;
     mc->default_boot_order = "";
     mc->default_ram_size = 512 * MiB;
     mc->default_ram_id = "ppc_spapr.ram";
diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
index 241389d72f8..88612429cb3 100644
--- a/hw/riscv/virt.c
+++ b/hw/riscv/virt.c
@@ -1917,7 +1917,7 @@ static void virt_machine_class_init(ObjectClass *oc, void *data)
     mc->max_cpus = VIRT_CPUS_MAX;
     mc->default_cpu_type = TYPE_RISCV_CPU_BASE;
     mc->block_default_type = IF_VIRTIO;
-    mc->no_cdrom = 1;
+    mc->no_cdrom = true;
     mc->pci_allow_0_address = true;
     mc->possible_cpu_arch_ids = riscv_numa_possible_cpu_arch_ids;
     mc->cpu_index_to_instance_props = riscv_numa_cpu_index_to_props;
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index 38aeba14eeb..af150cf6155 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -785,10 +785,10 @@ static void ccw_machine_class_init(ObjectClass *oc, void *data)
     mc->init = ccw_init;
     mc->reset = s390_machine_reset;
     mc->block_default_type = IF_VIRTIO;
-    mc->no_cdrom = 1;
-    mc->no_floppy = 1;
-    mc->no_parallel = 1;
-    mc->no_sdcard = 1;
+    mc->no_cdrom = true;
+    mc->no_floppy = true;
+    mc->no_parallel = true;
+    mc->no_sdcard = true;
     mc->max_cpus = S390_MAX_CPUS;
     mc->has_hotpluggable_cpus = true;
     mc->smp_props.books_supported = true;
diff --git a/hw/xtensa/sim.c b/hw/xtensa/sim.c
index 0a1fd900376..e06a8c1813c 100644
--- a/hw/xtensa/sim.c
+++ b/hw/xtensa/sim.c
@@ -122,7 +122,7 @@ static void xtensa_sim_machine_init(MachineClass *mc)
     mc->is_default = true;
     mc->init = xtensa_sim_init;
     mc->max_cpus = 4;
-    mc->no_serial = 1;
+    mc->no_serial = true;
     mc->default_cpu_type = XTENSA_DEFAULT_CPU_TYPE;
 }
 
