diff --git a/docs/conf.py b/docs/conf.py
index 0d900b506a8ad1190240ac1aa316ca0940b98b0b..d127e0ea01376371bf6c498b1cc60b3594fadbfe 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -103,7 +103,7 @@ pygments_style = 'sphinx'
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-html_theme = 'default'
+html_theme = 'classic'
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the