diff --git a/README.md b/README.md
index 6d103b20ee..851a3bd48c 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # OpenLayers 3
 
 [![Travis CI Status](https://secure.travis-ci.org/openlayers/ol3.svg)](http://travis-ci.org/#!/openlayers/ol3)
-[![Coverage Status](https://coveralls.io/repos/openlayers/ol3/badge.svg)](https://coveralls.io/r/openlayers/ol3)
+[![Coverage Status](https://coveralls.io/repos/openlayers/ol3/badge.svg?branch=master)](https://coveralls.io/r/openlayers/ol3?branch=master)
 
 Welcome to [OpenLayers 3](http://openlayers.org/)!