diff --git a/zebra-chain/src/transaction/hash.rs b/zebra-chain/src/transaction/hash.rs
index 96975a760..e8188055f 100644
--- a/zebra-chain/src/transaction/hash.rs
+++ b/zebra-chain/src/transaction/hash.rs
@@ -19,7 +19,7 @@ pub struct Hash(pub [u8; 32]);
 
 impl<'a> From<&'a Transaction> for Hash {
     fn from(transaction: &'a Transaction) -> Self {
-        let hasher = TxIdBuilder::new(&transaction);
+        let hasher = TxIdBuilder::new(transaction);
         hasher
             .txid()
             .expect("zcash_primitives and Zebra transaction formats must be compatible")
diff --git a/zebra-chain/src/transaction/sighash.rs b/zebra-chain/src/transaction/sighash.rs
index baf38f71b..dffc01b9e 100644
--- a/zebra-chain/src/transaction/sighash.rs
+++ b/zebra-chain/src/transaction/sighash.rs
@@ -555,6 +555,6 @@ impl<'a> SigHasher<'a> {
             .input
             .as_ref()
             .map(|(output, input, idx)| (output, *input, *idx));
-        sighash(&self.trans, self.hash_type, self.network_upgrade, input)
+        sighash(self.trans, self.hash_type, self.network_upgrade, input)
     }
 }