diff --git a/sphinx_rtd_theme/layout.html b/sphinx_rtd_theme/layout.html
index c8a307628..7436dcbea 100644
--- a/sphinx_rtd_theme/layout.html
+++ b/sphinx_rtd_theme/layout.html
@@ -36,11 +36,6 @@
     {%- endif %}
   {%- endfor %}
 
-  {# "extra_css_files" is a theme option and it's always a string #}
-  {%- for css_file in extra_css_files %}
-    <link rel="stylesheet" href="{{ pathto(css_file, 1)|escape }}" type="text/css" />
-  {%- endfor -%}
-
   {#- FAVICON
       favicon_url is the only context var necessary since Sphinx 4.
       In Sphinx<4, we use favicon but need to prepend path info.