diff --git a/python_docs_theme/layout.html b/python_docs_theme/layout.html
index 08e41df..f830491 100644
--- a/python_docs_theme/layout.html
+++ b/python_docs_theme/layout.html
@@ -82,7 +82,7 @@ <h3>{{ _('Navigation') }}</h3>
     {{ super() }}
 {%- endblock -%}
 
-{%- block body_tag %}
+{%- block document %}
 {{ super() }}
 {%- if builder != 'htmlhelp' %}
 <div class="mobile-nav">