diff --git a/xen/drivers/passthrough/pci.c b/xen/drivers/passthrough/pci.c
index 1633825738..bd144aa59c 100644
--- a/xen/drivers/passthrough/pci.c
+++ b/xen/drivers/passthrough/pci.c
@@ -439,6 +439,7 @@ static void free_pdev(struct pci_seg *pseg, struct pci_dev *pdev)
         unsigned long flags;
 
         case DEV_TYPE_PCIe2PCI_BRIDGE:
+        case DEV_TYPE_PCI2PCIe_BRIDGE:
         case DEV_TYPE_LEGACY_PCI_BRIDGE:
             sec_bus = pci_conf_read8(pdev->sbdf, PCI_SECONDARY_BUS);
             sub_bus = pci_conf_read8(pdev->sbdf, PCI_SUBORDINATE_BUS);