diff --git a/config.toml b/config.toml
index 26e9cbc..7208c13 100644
--- a/config.toml
+++ b/config.toml
@@ -31,6 +31,7 @@ mediaType = "text/javascript"
 [outputs]
 list = ["html", "js"]
 
+[markup]
 [markup.tableOfContents]
 endLevel=4
 ordered = true