diff --git a/arch/x86/include/asm/k8.h b/arch/x86/include/asm/k8.h
index c092f720bd60ffa866e8a8cf5c85402e7cda1b62..f70e60071fe80039e4d439cca6667f65729bcbd5 100644
--- a/arch/x86/include/asm/k8.h
+++ b/arch/x86/include/asm/k8.h
@@ -4,6 +4,7 @@
 #include <linux/pci.h>
 
 extern struct pci_device_id k8_nb_ids[];
+struct bootnode;
 
 extern int early_is_k8_nb(u32 value);
 extern struct pci_dev **k8_northbridges;