diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index ce14866..0459acf 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -520,12 +520,14 @@
     return false;
 }
 
-static void build_append_pcihp_slots(Aml *parent_scope, PCIBus *bus,
-                                     QObject *bsel)
+static void build_append_pcihp_slots(Aml *parent_scope, PCIBus *bus)
 {
     int devfn;
     Aml *dev, *notify_method = NULL, *method;
+    QObject *bsel = object_property_get_qobject(OBJECT(bus),
+                        ACPI_PCIHP_PROP_BSEL, NULL);
     uint64_t bsel_val = qnum_get_uint(qobject_to(QNum, bsel));
+    qobject_unref(bsel);
 
     aml_append(parent_scope, aml_name_decl("BSEL", aml_int(bsel_val)));
     notify_method = aml_method("DVNT", 2, AML_NOTSERIALIZED);
@@ -570,12 +572,9 @@
 
 void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus)
 {
-    QObject *bsel;
     int devfn;
     Aml *dev;
 
-    bsel = object_property_get_qobject(OBJECT(bus), ACPI_PCIHP_PROP_BSEL, NULL);
-
     for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) {
         /* ACPI spec: 1.0b: Table 6-2 _ADR Object Bus Types, PCI type */
         int adr = PCI_SLOT(devfn) << 16 | PCI_FUNC(devfn);
@@ -601,11 +600,9 @@
         aml_append(parent_scope, dev);
     }
 
-    if (bsel) {
-        build_append_pcihp_slots(parent_scope, bus, bsel);
+    if (object_property_find(OBJECT(bus), ACPI_PCIHP_PROP_BSEL)) {
+        build_append_pcihp_slots(parent_scope, bus);
     }
-
-    qobject_unref(bsel);
 }
 
 static bool build_append_notfication_callback(Aml *parent_scope,