diff --git a/cf/misc.m4 b/cf/misc.m4
index ad4b0fe66..c6d8827aa 100644
--- a/cf/misc.m4
+++ b/cf/misc.m4
@@ -5,7 +5,7 @@ AC_DEFUN([upcase],[`echo $1 | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRST
 AC_DEFUN([rk_LIBOBJ],[AC_LIBOBJ([$1])])dnl
 AC_DEFUN([rk_CONFIG_HEADER],[AH_TOP([#ifndef RCSID
 #define RCSID(msg) \
-static /**/const char *const rcsid[] = { (const char *)rcsid, "\100(#)" msg }
+static /**/const char *const rcsid[] = { (const char *)rcsid, "@(#)" msg }
 #endif
 
 /* Maximum values on all known systems */