diff --git a/docs/conf.py b/docs/conf.py
index f4f0918e6cc5..d39213a6a140 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -110,8 +110,6 @@
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 
-html_theme = 'classic'
-
 if LOCAL_READ_THE_DOCS:
   html_theme = 'sphinx_rtd_theme'
   html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]