diff --git a/src/calibre/gui2/viewer/integration.py b/src/calibre/gui2/viewer/integration.py
index 76a9911612..6252cb5979 100644
--- a/src/calibre/gui2/viewer/integration.py
+++ b/src/calibre/gui2/viewer/integration.py
@@ -2,8 +2,6 @@
 # vim:fileencoding=utf-8
 # License: GPL v3 Copyright: 2020, Kovid Goyal <kovid at kovidgoyal.net>
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 import os
 import re