diff --git a/doc/conf.py b/doc/conf.py
index a1699d94d99a71e677a0263e5e04b9a54f86d0f1..0b752766f7730f7aba5561f4ae5fb759788ee8e6 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -105,7 +105,7 @@ todo_include_todos = True
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-html_theme = 'nature'
+html_theme = 'bizstyle'
 
 # 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