diff --git a/docs/book/book.toml b/docs/book/book.toml
index a6f6a6ed78..5ca4badde8 100644
--- a/docs/book/book.toml
+++ b/docs/book/book.toml
@@ -34,8 +34,3 @@ use-boolean-and = true
 [output.html.fold]
 enable = true
 level = 3
-
-[preprocessor.toc]
-command = "mdbook-toc"
-renderer = ["html"]
-max-level = 3