diff --git a/sys/arch/alpha/pci/ciareg.h b/sys/arch/alpha/pci/ciareg.h
index 76929cbd6673..5a04163858bc 100644
--- a/sys/arch/alpha/pci/ciareg.h
+++ b/sys/arch/alpha/pci/ciareg.h
@@ -1,4 +1,4 @@
-/* $NetBSD: ciareg.h,v 1.18 1998/06/04 01:18:22 thorpej Exp $ */
+/* $NetBSD: ciareg.h,v 1.19 1998/06/05 00:53:02 thorpej Exp $ */
 
 /*
  * Copyright (c) 1995, 1996 Carnegie-Mellon University.
@@ -71,6 +71,7 @@
 #define	CIA_PCI_W3MASK	0x8760000740UL
 #define	CIA_PCI_T3BASE	0x8760000780UL
 
+#define	PYXIS_INT_REQ	0x87a0000000UL
 #define	PYXIS_INT_MASK	0x87a0000040UL
 #define	PYXIS_GPO	0x87a0000180UL