diff --git a/doc/oper-guide/conf.py b/doc/oper-guide/conf.py
index b741a30f..38ff41f0 100644
--- a/doc/oper-guide/conf.py
+++ b/doc/oper-guide/conf.py
@@ -119,7 +119,7 @@ todo_include_todos = False
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-html_theme = 'alabaster'
+#html_theme = 'alabaster'
 
 # 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