diff --git a/newlib/ChangeLog b/newlib/ChangeLog
index b54d67e84..551d7a530 100644
--- a/newlib/ChangeLog
+++ b/newlib/ChangeLog
@@ -1,3 +1,8 @@
+2008-01-25  Hans-Peter Nilsson  <hp@bitrange.com>
+
+	* libc/sys/mmixware/isatty.c (_isatty): Renamed from isatty.
+	Make ISO C.
+
 2008-01-21  DJ Delorie  <dj@redhat.com>
 
 	* libc/sys/sh/syscalls.c (_isatty): New.
diff --git a/newlib/libc/sys/mmixware/isatty.c b/newlib/libc/sys/mmixware/isatty.c
index 86729aa56..1e1db6491 100644
--- a/newlib/libc/sys/mmixware/isatty.c
+++ b/newlib/libc/sys/mmixware/isatty.c
@@ -1,6 +1,6 @@
 /* isatty for MMIXware.
 
-   Copyright (C) 2001 Hans-Peter Nilsson
+   Copyright (C) 2001, 2008 Hans-Peter Nilsson
 
    Permission to use, copy, modify, and distribute this software is
    freely granted, provided that the above copyright notice, this notice
@@ -16,8 +16,8 @@
 #include <sys/stat.h>
 #include "sys/syscall.h"
 
-isatty (fd)
-     int fd;
+int
+_isatty (int fd)
 {
   return fd == 0 || fd == 1 || fd == 2;
 }