diff --git a/hw/pci.c b/hw/pci.c
index d54f05ef22..35c3a68405 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -41,7 +41,6 @@ struct PCIBus {
     pci_set_irq_fn set_irq;
     pci_map_irq_fn map_irq;
     pci_hotplug_fn hotplug;
-    uint32_t config_reg; /* XXX: suppress */
     void *irq_opaque;
     PCIDevice *devices[256];
     PCIDevice *parent_dev;