diff --git a/docs/source/conf.py b/docs/source/conf.py
index d38108d..ded0ce9 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -63,5 +63,3 @@ html_static_path = ['_static']
 
 # https://stackoverflow.com/a/56448499
 master_doc = 'index'
-
-default_role = 'option'