diff --git a/docs/conf.py b/docs/conf.py
index 3e007d256e20..76a9cfae79af 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -97,7 +97,7 @@
 # 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'
 
 on_rtd = os.environ.get('READTHEDOCS', None) == 'True'
 if on_rtd: