diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index 3361d850563d357acae257d8c9418b0fe29c765a..a95664092e0beb5803d4647b879eb7271b5c4fc6 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -1594,7 +1594,8 @@ PciInfoList *qmp_query_pci(Error **errp)
 
     QLIST_FOREACH(host_bridge, &pci_host_bridges, next) {
         info = g_malloc0(sizeof(*info));
-        info->value = qmp_query_pci_bus(host_bridge->bus, 0);
+        info->value = qmp_query_pci_bus(host_bridge->bus,
+                                        pci_bus_num(host_bridge->bus));
 
         /* XXX: waiting for the qapi to support GSList */
         if (!cur_item) {