diff --git a/recipes/nsfw_corp.recipe b/recipes/nsfw_corp.recipe
index a14f920b78..4431dca20e 100644
--- a/recipes/nsfw_corp.recipe
+++ b/recipes/nsfw_corp.recipe
@@ -4,7 +4,6 @@ __copyright__ = '2012-2013, Darko Miletic <darko.miletic at gmail.com>'
 www.nsfwcorp.com
 '''
 
-import urllib
 from calibre.web.feeds.news import BasicNewsRecipe
 
 class NotSafeForWork(BasicNewsRecipe):
@@ -55,7 +54,7 @@ class NotSafeForWork(BasicNewsRecipe):
             br['password'] = self.password
             br.submit()
         return br
-                        
+
     def get_feeds(self):
         self.feeds = []
         soup = self.index_to_soup(self.SETTINGS)
diff --git a/src/calibre/gui2/store/stores/koobe_plugin.py b/src/calibre/gui2/store/stores/koobe_plugin.py
index b6ecdea6be..f717e73c75 100644
--- a/src/calibre/gui2/store/stores/koobe_plugin.py
+++ b/src/calibre/gui2/store/stores/koobe_plugin.py
@@ -8,7 +8,6 @@ __copyright__ = '2013, Tomasz Długosz <tomek3d@gmail.com>'
 __docformat__ = 'restructuredtext en'
 
 import urllib
-from base64 import b64encode
 from contextlib import closing
 
 from lxml import html
diff --git a/src/calibre/gui2/store/stores/woblink_plugin.py b/src/calibre/gui2/store/stores/woblink_plugin.py
index 6434488b21..a71be4840b 100644
--- a/src/calibre/gui2/store/stores/woblink_plugin.py
+++ b/src/calibre/gui2/store/stores/woblink_plugin.py
@@ -9,7 +9,6 @@ __docformat__ = 'restructuredtext en'
 
 import re
 import urllib
-from base64 import b64encode
 from contextlib import closing
 
 from lxml import html