diff --git a/README.md b/README.md
index e1d8bf1a5e..69603cee43 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@ CSL Style Repository
 ====================
 
 [![Build Status](https://travis-ci.org/citation-style-language/styles.svg?branch=master)](https://travis-ci.org/citation-style-language/styles)
-[![license](https://img.shields.io/badge/license-CC BY SA 3.0-blue.svg)](https://github.com/citation-style-language/styles#licensing)
+[![license](https://img.shields.io/badge/license-CC%20BY%20SA%203.0-blue.svg)](https://github.com/citation-style-language/styles#licensing)
 [![GitHub contributors](https://img.shields.io/github/contributors/citation-style-language/styles.svg)](https://github.com/citation-style-language/styles/graphs/contributors)
 [![GitHub closed pull requests](https://img.shields.io/github/issues-pr-closed/citation-style-language/styles.svg)](https://github.com/citation-style-language/styles/pulls?q=is%3Apr+is%3Aclosed)