diff -Naur a/setup.py b/setup.py
--- a/setup.py	2019-07-29 20:46:23.212292642 +0300
+++ b/setup.py	2019-07-29 20:47:47.426300796 +0300
@@ -20,10 +20,7 @@
 from distutils.dir_util import remove_tree
 from distutils.sysconfig import get_python_lib
 
-try:
-    from sphinx.application import Sphinx
-except ImportError:
-    Sphinx = None
+Sphinx = None
 
 try:
     import py2exe
