diff --git a/packages/hardware-trezor/src/transformers/tx.ts b/packages/hardware-trezor/src/transformers/tx.ts
index f84751d66d4..1fb735100af 100644
--- a/packages/hardware-trezor/src/transformers/tx.ts
+++ b/packages/hardware-trezor/src/transformers/tx.ts
@@ -11,7 +11,7 @@ import { mapTxIns } from './txIn';
  * this function to the Transformer interface like in the
  * hardware-ledger package)
  */
-const ledgerTxTransformer = async (
+const trezorTxTransformer = async (
   body: Cardano.TxBody,
   context: TrezorTxTransformerContext
 ): Promise<Partial<Trezor.CardanoSignTransaction>> => ({
@@ -36,7 +36,7 @@ export const txToTrezor = async (props: TxToTrezorProps): Promise<Trezor.Cardano
   // First run the depricated trezor transformers
   ...(await depricated.txToTrezor(props)),
   // Then override them with our new implementations
-  ...(await ledgerTxTransformer(props.cardanoTxBody, {
+  ...(await trezorTxTransformer(props.cardanoTxBody, {
     chainId: props.chainId,
     inputResolver: props.inputResolver,
     knownAddresses: props.knownAddresses
diff --git a/packages/hardware-trezor/src/transformers/txIn.ts b/packages/hardware-trezor/src/transformers/txIn.ts
index 2cfca2423bf..00cf886657c 100644
--- a/packages/hardware-trezor/src/transformers/txIn.ts
+++ b/packages/hardware-trezor/src/transformers/txIn.ts
@@ -13,7 +13,7 @@ export const toTrezorTxIn: Transform<Cardano.TxIn, Promise<Trezor.CardanoInput>,
   context?
 ) => ({
   path: (await resolvePaymentKeyPathForTxIn(txIn, context)) ?? undefined,
-  prev_hash: Buffer.from(txIn.txId).toString('hex'),
+  prev_hash: txIn.txId,
   prev_index: txIn.index
 });
 
diff --git a/packages/hardware-trezor/test/transformers/txIn.test.ts b/packages/hardware-trezor/test/transformers/txIn.test.ts
index d0eb0ca70d5..fb537ffe5da 100644
--- a/packages/hardware-trezor/test/transformers/txIn.test.ts
+++ b/packages/hardware-trezor/test/transformers/txIn.test.ts
@@ -29,7 +29,7 @@ describe('tx-inputs', () => {
       for (const input of txIns) {
         expect(input).toEqual({
           path: knownAddressKeyPath,
-          prev_hash: Buffer.from(txIn.txId).toString('hex'),
+          prev_hash: txIn.txId,
           prev_index: txIn.index
         });
       }