diff --git a/hw/grackle_pci.c b/hw/grackle_pci.c
index 177c88877a0a8d4335c20f9da246fe3c349c7a51..d878cf6748ac0cacab88eda7eb917919b2621368 100644
--- a/hw/grackle_pci.c
+++ b/hw/grackle_pci.c
@@ -141,7 +141,7 @@ PCIBus *pci_grackle_init(uint32_t base, qemu_irq *pic)
     qdev_init(dev);
     s = sysbus_from_qdev(dev);
     d = FROM_SYSBUS(GrackleState, s);
-    d->host_state.bus = pci_register_bus(NULL, "pci",
+    d->host_state.bus = pci_register_bus(&d->busdev.qdev, "pci",
                                          pci_grackle_set_irq,
                                          pci_grackle_map_irq,
                                          pic, 0, 4);
diff --git a/hw/unin_pci.c b/hw/unin_pci.c
index e6d9a703e7567f9dd85f535c367cfe97e3edca49..a202153922789931627a89d8ca83c5c1b7367901 100644
--- a/hw/unin_pci.c
+++ b/hw/unin_pci.c
@@ -256,7 +256,7 @@ PCIBus *pci_pmac_init(qemu_irq *pic)
     qdev_init(dev);
     s = sysbus_from_qdev(dev);
     d = FROM_SYSBUS(UNINState, s);
-    d->host_state.bus = pci_register_bus(NULL, "pci",
+    d->host_state.bus = pci_register_bus(&d->busdev.qdev, "pci",
                                          pci_unin_set_irq, pci_unin_map_irq,
                                          pic, 11 << 3, 4);