diff --git a/doc/conf.py b/doc/conf.py
index 352aa6d3d3aab730c80daced82cf6ad88bfbda8d..7bd48c8f2fff176cae16d20c626639a70b1d8923 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -126,7 +126,7 @@ html_theme = 'scikit-learn'
 # 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
 # documentation.
-html_theme_options = {'oldversion':False, 'collapsiblesidebar': True}
+html_theme_options = {'oldversion':True, 'collapsiblesidebar': True}
 
 # Add any paths that contain custom themes here, relative to this directory.
 html_theme_path = ['themes']