diff --git a/hw/pci-bridge/i82801b11.c b/hw/pci-bridge/i82801b11.c
index 8a5e426bea90a7ef96d1abdf82b4beaa75954137..14cd7fd405939236232c9e55268cffe2979cef22 100644
--- a/hw/pci-bridge/i82801b11.c
+++ b/hw/pci-bridge/i82801b11.c
@@ -90,6 +90,7 @@ static void i82801b11_bridge_class_init(ObjectClass *klass, void *data)
     k->device_id = PCI_DEVICE_ID_INTEL_82801BA_11;
     k->revision = ICH9_D2P_A2_REVISION;
     k->init = i82801b11_bridge_initfn;
+    k->config_write = pci_bridge_write_config;
     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 }