diff --git a/arch/mips/include/asm/sn/nmi.h b/arch/mips/include/asm/sn/nmi.h
index 6b7b0b5f3729..1af49897d4e1 100644
--- a/arch/mips/include/asm/sn/nmi.h
+++ b/arch/mips/include/asm/sn/nmi.h
@@ -3,13 +3,13 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
+ * Derived from IRIX <sys/SN/nmi.h>, Revision 1.5.
+ *
  * Copyright (C) 1992 - 1997 Silicon Graphics, Inc.
  */
 #ifndef __ASM_SN_NMI_H
 #define __ASM_SN_NMI_H
 
-#ident "$Revision: 1.5 $"
-
 #include <asm/sn/addrs.h>
 
 /*