diff --git a/bellman/src/gadgets/uint32.rs b/bellman/src/gadgets/uint32.rs
index a10be6c..8bf4558 100644
--- a/bellman/src/gadgets/uint32.rs
+++ b/bellman/src/gadgets/uint32.rs
@@ -1,5 +1,7 @@
 //! Circuit representation of a [`u32`], with helpers for the [`sha256`]
 //! gadgets.
+//!
+//! [`sha256`]: crate::gadgets::sha256
 
 use ff::{Field, PrimeField, ScalarEngine};
 
diff --git a/zcash_client_backend/src/encoding.rs b/zcash_client_backend/src/encoding.rs
index 01add4c..ba99912 100644
--- a/zcash_client_backend/src/encoding.rs
+++ b/zcash_client_backend/src/encoding.rs
@@ -2,6 +2,8 @@
 //!
 //! Human-Readable Prefixes (HRPs) for Bech32 encodings are located in the [`constants`]
 //! module.
+//!
+//! [`constants`]: crate::constants
 
 use bech32::{self, Error, FromBase32, ToBase32};
 use pairing::bls12_381::Bls12;