From df6beb6e09d0d1b969e3193b893dcbffd08d273a Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Tue, 8 Nov 2011 12:42:24 +0530
Subject: [PATCH] ...

---
 src/calibre/gui2/wizard/__init__.py | 5 +++++
 src/calibre/library/save_to_disk.py | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/calibre/gui2/wizard/__init__.py b/src/calibre/gui2/wizard/__init__.py
index 9fe258e836..c0965412db 100644
--- a/src/calibre/gui2/wizard/__init__.py
+++ b/src/calibre/gui2/wizard/__init__.py
@@ -122,6 +122,11 @@ class Kobo(Device):
     output_format = 'EPUB'
     id = 'kobo'
 
+class KoboVox(Kobo):
+    name = 'Kobo Vox'
+    output_profile = 'tablet'
+    id = 'kobo_vox'
+
 class Booq(Device):
     name = 'bq Classic'
     manufacturer = 'Booq'
diff --git a/src/calibre/library/save_to_disk.py b/src/calibre/library/save_to_disk.py
index 45d80839b2..c8ac28a01f 100644
--- a/src/calibre/library/save_to_disk.py
+++ b/src/calibre/library/save_to_disk.py
@@ -173,7 +173,7 @@ def get_components(template, mi, id, timefmt='%b %Y', length=250,
     tsorder = tweaks['save_template_title_series_sorting']
     format_args = FORMAT_ARGS.copy()
     format_args.update(mi.all_non_none_fields())
-    if mi.is_null('author_sort'):
+    if mi.author_sort == _('Unknown'):
         format_args['author_sort'] = _('Unknown')
     if mi.title:
         if tsorder == 'strictly_alphabetic':