diff --git a/README.rst b/README.rst
index d39070bbe..169547be1 100644
--- a/README.rst
+++ b/README.rst
@@ -26,7 +26,7 @@ Pillow is the "friendly PIL fork" by `Alex Clark and Contributors <https://githu
    :target: https://pypi.python.org/pypi/Pillow/
    :alt: Number of PyPI downloads
 
-.. image:: https://coveralls.io/repos/python-pillow/Pillow/badge.svg?branch=master
+.. image:: https://coveralls.io/repos/python-pillow/Pillow/badge.svg?branch=master&service=github
    :target: https://coveralls.io/r/python-pillow/Pillow?branch=master
    :alt: Code coverage