diff --git a/book/book.toml b/book/book.toml
index 449b8ef3..9f5efbb4 100644
--- a/book/book.toml
+++ b/book/book.toml
@@ -6,5 +6,4 @@ src = "src"
 title = "Roguelike Tutorial - In Rust"
 
 [output.html]
-theme = "rust"
 google-analytics = "UA-132191594-2"