diff --git a/setup.py b/setup.py
index ab87144..a42cdce 100644
--- a/setup.py
+++ b/setup.py
@@ -1,40 +1,44 @@
 from setuptools import setup, find_packages
-from sphinx.setup_command import BuildDoc
+try:
+    from sphinx.setup_command import BuildDoc
+    cmdclass={'doc': BuildDoc}
+except Exception:
+    pass
 
 name = 'slides'
 version = '1.0'
 release = '1.0.0'
 
 setup(name=name,
       packages=find_packages(),
       version="0.0.1",
       author="Guillaume Anciaux",
       author_email="guillaume.anciaux@epfl.ch",
       description=("Slides making/convertion tools"),
       install_require=["sphinx"],
-      tests_require=["pytest"],
+      tests_requires=["pytest"],
       setup_requires=["pytest-runner"],
       test_suite="tests",
-      cmdclass={'doc': BuildDoc},
+      cmdclass=cmdclass,
       command_options={
           'doc': {
               'project': ('setup.py', name),
               'version': ('setup.py', version),
               'release': ('setup.py', release),
               'source_dir': ('setup.py', 'doc')}},
       scripts=['scripts/slides',
                'scripts/pLatex'],
       license="""
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """)