diff --git a/docs_theme/404.html b/docs_theme/404.html
index 7d7cc0a43..bbb6b70ff 100644
--- a/docs_theme/404.html
+++ b/docs_theme/404.html
@@ -4,6 +4,6 @@
 
   <h1 id="404-page-not-found" style="text-align: center">404</h1>
   <p style="text-align: center"><strong>Page not found</strong></p>
-  <p style="text-align: center">Try the <a href="{{ site_url }}">homepage</a>, or <a href="#mkdocs_search_modal" data-toggle="modal">search the documentation</a>.</p>
+  <p style="text-align: center">Try the <a href="{{ base_url }}">homepage</a>, or <a href="#mkdocs_search_modal" data-toggle="modal">search the documentation</a>.</p>
 
 {% endblock %}