diff --git a/setup.py b/setup.py
index <HASH>..<HASH> 100755
--- a/setup.py
+++ b/setup.py
@@ -17,7 +17,6 @@ setuptools.setup(
     classifiers=[
         "Development Status :: 2 - Pre-Alpha"
     ],
-    include_package_data=True,
     test_suite="nion.swift.test",
     entry_points={
         'console_scripts': [
Ensure all resource files are included in sdist.

Removed include_package_data since it is used to either include what is
in the manifest or _everything_ in under version control, but seemingly
only CVS or Subversion, not Git.

Once removed, the package_data tag properly adds the stylesheet to the
sdist.