diff --git a/specs/book.toml b/specs/book.toml
index 2ab3d5a39..92a17831e 100644
--- a/specs/book.toml
+++ b/specs/book.toml
@@ -1,7 +1,6 @@
 [book]
 authors = ["Celestia Labs"]
 language = "en"
-multilingual = false
 src = "src"
 title = "Celestia Node Specification"