diff --git a/src/constants.rs b/src/constants.rs
index 39fd3df5..8a9b76f2 100644
--- a/src/constants.rs
+++ b/src/constants.rs
@@ -7,7 +7,7 @@ pub use fixed_bases::{NullifierK, OrchardFixedBases, OrchardFixedBasesFull, Valu
 pub use sinsemilla::{OrchardCommitDomains, OrchardHashDomains};
 
 /// $\mathsf{MerkleDepth^{Orchard}}$
-pub(crate) const MERKLE_DEPTH_ORCHARD: usize = 32;
+pub const MERKLE_DEPTH_ORCHARD: usize = 32;
 
 /// The Pallas scalar field modulus is $q = 2^{254} + \mathsf{t_q}$.
 /// <https://github.com/zcash/pasta>
diff --git a/src/lib.rs b/src/lib.rs
index d30e9c83..005253e9 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -38,5 +38,6 @@ pub use action::Action;
 pub use address::Address;
 pub use bundle::Bundle;
 pub use circuit::Proof;
+pub use constants::MERKLE_DEPTH_ORCHARD as NOTE_COMMITMENT_TREE_DEPTH;
 pub use note::Note;
 pub use tree::Anchor;