diff --git a/cms/templates/index.html b/cms/templates/index.html
index 8b14ea179a..916720f4e7 100644
--- a/cms/templates/index.html
+++ b/cms/templates/index.html
@@ -69,7 +69,7 @@
       <article class="my-classes">
         % if user.is_active:
         <ul class="class-list">
-          %for course, url, lms_link in sorted(courses, key=lambda s: s[0].lower()):
+          %for course, url, lms_link in sorted(courses, key=lambda s: s[0].lower() if s[0] is not None else ''):
           <li>
             <a class="class-link" href="${url}" class="class-name">
               <span class="class-name">${course}</span>