diff --git a/ChangeLog b/ChangeLog
index 04a9505..5e2fd0c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2001-04-20  Ben Elliston  <bje@redhat.com>
+
+	* config.guess: Detect PowerMAX OS on PowerPC.
+
 2001-04-20  Tyson Dowd  <trd@cs.mu.oz.au>
 	    Fergus Henderson  <fjh@cs.mu.oz.au>
 
diff --git a/config.guess b/config.guess
index bf38b63..ba66165 100755
--- a/config.guess
+++ b/config.guess
@@ -3,7 +3,7 @@
 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
 #   Free Software Foundation, Inc.
 
-timestamp='2001-03-30'
+timestamp='2001-04-20'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -412,6 +412,9 @@ EOF
 	rm -f $dummy.c $dummy
 	echo mips-mips-riscos${UNAME_RELEASE}
 	exit 0 ;;
+    Motorola:PowerMAX_OS:*:*)
+	echo powerpc-motorola-powermax
+	exit 0 ;;
     Night_Hawk:Power_UNIX:*:*)
 	echo powerpc-harris-powerunix
 	exit 0 ;;