diff --git a/src/calibre/constants.py b/src/calibre/constants.py
index 2617603e25..9c7291a273 100644
--- a/src/calibre/constants.py
+++ b/src/calibre/constants.py
@@ -2,7 +2,7 @@ __license__   = 'GPL v3'
 __copyright__ = '2008, Kovid Goyal kovid@kovidgoyal.net'
 __docformat__ = 'restructuredtext en'
 __appname__   = 'calibre'
-__version__   = '0.6.92'
+__version__   = '0.6.93'
 __author__    = "Kovid Goyal <kovid@kovidgoyal.net>"
 
 import re
diff --git a/src/calibre/devices/prs505/sony_cache.py b/src/calibre/devices/prs505/sony_cache.py
index 64f82e2b76..ecd0df2b37 100644
--- a/src/calibre/devices/prs505/sony_cache.py
+++ b/src/calibre/devices/prs505/sony_cache.py
@@ -16,8 +16,7 @@ from calibre import prints, guess_type
 from calibre.devices.errors import DeviceError
 from calibre.constants import DEBUG
 from calibre.ebooks.chardet import xml_to_unicode
-from calibre.ebooks.metadata import string_to_authors, authors_to_string, \
-    title_sort
+from calibre.ebooks.metadata import authors_to_string, title_sort
 
 # Utility functions {{{
 EMPTY_CARD_CACHE = '''\