diff --git a/sysdeps/mach/hurd/sys/param.h b/sysdeps/mach/hurd/sys/param.h
index 79f3b0503a..ac06411863 100644
--- a/sysdeps/mach/hurd/sys/param.h
+++ b/sysdeps/mach/hurd/sys/param.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1993, 1994 Free Software Foundation, Inc.
+/* Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
 This file is part of the GNU C Library.
 
 The GNU C Library is free software; you can redistribute it and/or
@@ -86,6 +86,7 @@ Cambridge, MA 02139, USA.  */
 /* BSD names for some <limits.h> values.  We do not define the BSD names
    for the values which are not statically limited, such as NOFILE.  */
 
+#define	NBBY		CHAR_BIT
 #define	NGROUPS		NGROUPS_MAX
 #define	MAXSYMLINKS	SYMLOOP_MAX
 #define	CANBSIZ		MAX_CANON /* XXX ? */