diff -r 0571319aed6a -r 6de16a6d83c6 templates/jumbotron-coursematerial.html
--- a/templates/jumbotron-coursematerial.html	Wed Dec 04 12:21:21 2013 +0100
+++ b/templates/jumbotron-coursematerial.html	Thu Dec 05 06:05:01 2013 +0100
@@ -1,2 +1,2 @@
-<img src="/static/images/coursematerial_300.png" />
+<img src="/static/images/coursematerial_300.png" alt="coursemaeterial" />
 <h1>How it works…</h1>