diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h
index 4e59197..1c8f28a 100644
--- a/arch/x86/include/asm/hw_irq.h
+++ b/arch/x86/include/asm/hw_irq.h
@@ -45,6 +45,7 @@
 extern void invalidate_interrupt7(void);
 
 extern void irq_move_cleanup_interrupt(void);
+extern void reboot_interrupt(void);
 extern void threshold_interrupt(void);
 
 extern void call_function_interrupt(void);