diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 0b23e5ec7b..24c8e17e62 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -96,7 +96,6 @@ typedef struct PCMachineClass {
 
     /* ACPI compat: */
     bool has_acpi_build;
-    int pci_root_uid;
 
     /* SMBIOS compat: */
     bool smbios_defaults;
@@ -127,6 +126,9 @@ typedef struct PCMachineClass {
 
 typedef struct PcPciMachineClass {
     PCMachineClass parent_class;
+
+    /* ACPI compat: */
+    int pci_root_uid;
 } PcPciMachineClass;
 
 #define TYPE_PC_MACHINE "common-pc-machine"
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 6f9925d176..b9890886f6 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -1426,6 +1426,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
     CrsRangeSet crs_range_set;
     PCMachineState *pcms = PC_MACHINE(machine);
     PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(machine);
+    PcPciMachineClass *ppmc;
     X86MachineState *x86ms = X86_MACHINE(machine);
     AcpiMcfgInfo mcfg;
     bool mcfg_valid = !!acpi_get_mcfg(&mcfg);
@@ -1448,10 +1449,12 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
 
     build_dbg_aml(dsdt);
     if (i440fx) {
+        ppmc = PC_PCI_MACHINE_GET_CLASS(machine);
+
         sb_scope = aml_scope("_SB");
         dev = aml_device("PCI0");
         aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03")));
-        aml_append(dev, aml_name_decl("_UID", aml_int(pcmc->pci_root_uid)));
+        aml_append(dev, aml_name_decl("_UID", aml_int(ppmc->pci_root_uid)));
         aml_append(dev, aml_pci_edsm());
         aml_append(sb_scope, dev);
         aml_append(dsdt, sb_scope);
@@ -1461,11 +1464,13 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
         }
         build_piix4_pci0_int(dsdt);
     } else if (q35) {
+        ppmc = PC_PCI_MACHINE_GET_CLASS(machine);
+
         sb_scope = aml_scope("_SB");
         dev = aml_device("PCI0");
         aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08")));
         aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03")));
-        aml_append(dev, aml_name_decl("_UID", aml_int(pcmc->pci_root_uid)));
+        aml_append(dev, aml_name_decl("_UID", aml_int(ppmc->pci_root_uid)));
         aml_append(dev, build_q35_osc_method(!pm->pcihp_bridge_en));
         aml_append(dev, aml_pci_edsm());
         aml_append(sb_scope, dev);
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 776d02db73..c42dd46e59 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -468,9 +468,11 @@ static void pc_xen_hvm_init(MachineState *machine)
 static void pc_i440fx_machine_options(MachineClass *m)
 {
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
+    PcPciMachineClass *ppmc = PC_PCI_MACHINE_CLASS(m);
     ObjectClass *oc = OBJECT_CLASS(m);
+
     pcmc->default_south_bridge = TYPE_PIIX3_DEVICE;
-    pcmc->pci_root_uid = 0;
+    ppmc->pci_root_uid = 0;
     pcmc->default_cpu_version = 1;
 
     m->family = "pc_piix";
@@ -622,12 +624,13 @@ DEFINE_I440FX_MACHINE(v5_2, "pc-i440fx-5.2", NULL,
 static void pc_i440fx_5_1_machine_options(MachineClass *m)
 {
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
+    PcPciMachineClass *ppmc = PC_PCI_MACHINE_CLASS(m);
 
     pc_i440fx_5_2_machine_options(m);
     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;
-    pcmc->pci_root_uid = 1;
+    ppmc->pci_root_uid = 1;
 }
 
 DEFINE_I440FX_MACHINE(v5_1, "pc-i440fx-5.1", NULL,
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index c3b0467ef3..dc0bf85464 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -345,7 +345,9 @@ static void pc_q35_init(MachineState *machine)
 static void pc_q35_machine_options(MachineClass *m)
 {
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
-    pcmc->pci_root_uid = 0;
+    PcPciMachineClass *ppmc = PC_PCI_MACHINE_CLASS(m);
+
+    ppmc->pci_root_uid = 0;
     pcmc->default_cpu_version = 1;
 
     m->family = "pc_q35";
@@ -495,12 +497,13 @@ DEFINE_Q35_MACHINE(v5_2, "pc-q35-5.2", NULL,
 static void pc_q35_5_1_machine_options(MachineClass *m)
 {
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
+    PcPciMachineClass *ppmc = PC_PCI_MACHINE_CLASS(m);
 
     pc_q35_5_2_machine_options(m);
     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;
-    pcmc->pci_root_uid = 1;
+    ppmc->pci_root_uid = 1;
 }
 
 DEFINE_Q35_MACHINE(v5_1, "pc-q35-5.1", NULL,
