diff --git a/zebra-chain/src/sprout/tree.rs b/zebra-chain/src/sprout/tree.rs
index c6966d3e8..b24df603f 100644
--- a/zebra-chain/src/sprout/tree.rs
+++ b/zebra-chain/src/sprout/tree.rs
@@ -10,6 +10,7 @@
 //!
 //! A root of a note commitment tree is associated with each treestate.
 #![allow(clippy::unit_arg)]
+#![allow(dead_code)]
 
 use std::fmt;