diff --git a/README.rst b/README.rst
index fe16420c4..d91b1a394 100644
--- a/README.rst
+++ b/README.rst
@@ -13,7 +13,7 @@ Pylinac
     :target: https://pypi.python.org/pypi/pylinac/
     :alt: License
 
-.. image:: https://coveralls.io/repos/jrkerns/pylinac/badge.svg
+.. image:: https://coveralls.io/repos/jrkerns/pylinac/badge.svg?branch=master
     :target: https://coveralls.io/r/jrkerns/pylinac