diff --git a/doc/dev-guide/book.toml b/doc/dev-guide/book.toml
index dd48698d4c..e280329c9b 100644
--- a/doc/dev-guide/book.toml
+++ b/doc/dev-guide/book.toml
@@ -1,12 +1,10 @@
 [book]
 authors = ["The Rust Project Developers"]
 language = "en"
-multilingual = false
-src = "src"
 title = "The Rustup developer guide"
 
 [output.html]
-curly-quotes = true
+smart-punctuation = true
 edit-url-template = "https://github.com/rust-lang/rustup/edit/HEAD/doc/dev-guide/{path}"
 git-repository-url = "https://github.com/rust-lang/rustup/tree/HEAD/doc/dev-guide"
 site-url = "https://rust-lang.github.io/rustup/dev-guide"
diff --git a/doc/user-guide/book.toml b/doc/user-guide/book.toml
index 036b36628f..202c3a8e8b 100644
--- a/doc/user-guide/book.toml
+++ b/doc/user-guide/book.toml
@@ -3,7 +3,7 @@ authors = ["The Rust Project Developers"]
 title = "The rustup book"
 
 [output.html]
-curly-quotes = true
+smart-punctuation = true
 edit-url-template = "https://github.com/rust-lang/rustup/edit/HEAD/doc/user-guide/{path}"
 git-repository-url = "https://github.com/rust-lang/rustup/tree/HEAD/doc/user-guide"
 site-url = "https://rust-lang.github.io/rustup/"