diff --git a/docs_theme/breadcrumbs.html b/docs_theme/breadcrumbs.html
index 2b0d30ca..05bcdf01 100644
--- a/docs_theme/breadcrumbs.html
+++ b/docs_theme/breadcrumbs.html
@@ -1,3 +1,8 @@
+<!--
+Copied from https://github.com/mkdocs/mkdocs/blob/master/mkdocs/themes/readthedocs/breadcrumbs.html
+Then lightly modified for accessibility
+-->
+
 <div role="navigation" aria-label="breadcrumbs navigation">
   <ul class="wy-breadcrumbs">
     <li><a href="{{ nav.homepage.url|url }}" class="icon icon-home" aria-label="{% trans %}Docs{% endtrans %}"></a> &raquo;</li>