diff --git a/mach/i86/as/mach5.c b/mach/i86/as/mach5.c
index 85f7d048..f8805c06 100644
--- a/mach/i86/as/mach5.c
+++ b/mach/i86/as/mach5.c
@@ -2,7 +2,7 @@
  * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
  * See the copyright notice in the ACK home directory, in the file "Copyright".
  */
-#define RCSID5 "$Header$"
+#define RCSID5 "$Id$"
 
 /*
  * INTEL 8086 special routines