diff --git a/Makefile b/Makefile
index 2fcce14..e695467 100644
--- a/Makefile
+++ b/Makefile
@@ -5,13 +5,13 @@ clean:
 	$(RM) -r build dist src/cchardet/__pycache__ src/cchardet/*.cpp src/cchardet/*.pyc src/cchardet/*.so src/cchardet.egg-info src/tests/__pycache__ src/tests/*.pyc
 
 sdist:
-	python setup.py sdist
+	python setup.py sdist --formats=gztar
 
 pip:
 	pip install -U pip cython tox nose chardet
 
 twine:
-	twine upload dist/*.whl dist/*.tar.gz
+	twine upload dist/cchardet-*.whl dist/cchardet-*.tar.gz
 
 install: clean
 	python setup.py install