diff --git a/doc/en/conf.py b/doc/en/conf.py
index 034b0f7a0..bde9de480 100644
--- a/doc/en/conf.py
+++ b/doc/en/conf.py
@@ -115,7 +115,9 @@ html_theme = 'flask'
 # 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 = {}
+html_theme_options = {
+  'index_logo': None
+}
 
 # Add any paths that contain custom themes here, relative to this directory.
 #html_theme_path = []