diff --git a/src/calibre/gui2/dialogs/edit_authors_dialog.py b/src/calibre/gui2/dialogs/edit_authors_dialog.py
index ea16a863e9..be0c5d484c 100644
--- a/src/calibre/gui2/dialogs/edit_authors_dialog.py
+++ b/src/calibre/gui2/dialogs/edit_authors_dialog.py
@@ -4,12 +4,12 @@ __docformat__ = 'restructuredtext en'
 __license__   = 'GPL v3'
 
 from PyQt4.Qt import (Qt, QDialog, QTableWidgetItem, QAbstractItemView, QIcon,
-                      QString, QDialogButtonBox, QFrame, QLabel, QTimer)
+                      QDialogButtonBox, QFrame, QLabel, QTimer)
 
 from calibre.ebooks.metadata import author_to_author_sort
 from calibre.gui2 import error_dialog
 from calibre.gui2.dialogs.edit_authors_dialog_ui import Ui_EditAuthorsDialog
-from calibre.utils.icu import sort_key, strcmp
+from calibre.utils.icu import sort_key
 
 class tableItem(QTableWidgetItem):
     def __ge__(self, other):