diff --git a/src/transaction.js b/src/transaction.js
index e34a871..311b057 100644
--- a/src/transaction.js
+++ b/src/transaction.js
@@ -59,7 +59,6 @@ export default class Transaction {
         tx.inputs = inputs
         tx.outputs = outputs
 
-        // Hashing must be done after, as the hash is of the Transaction (up to now)
         tx.id = Transaction.hashTransaction(tx)
         return tx
     }
@@ -227,7 +226,6 @@ export default class Transaction {
             'id': unspentOutputs[0].tx.operation === 'CREATE' ? unspentOutputs[0].tx.id
                 : unspentOutputs[0].tx.asset.id
         }
-
         return Transaction.makeTransaction('TRANSFER', assetLink, metadata, outputs, inputs)
     }
 
diff --git a/test/transaction/test_transaction.js b/test/transaction/test_transaction.js
index 7df6e16..ba819c4 100644
--- a/test/transaction/test_transaction.js
+++ b/test/transaction/test_transaction.js
@@ -68,8 +68,7 @@ test('makeOutput throws TypeError with incorrect amount type', t => {
 
 
 test('Create TRANSFER transaction based on CREATE transaction', t => {
-    sinon.spy(Transaction.makeTransaction, 'default')
-
+    sinon.spy(Transaction.makeTransaction)
     Transaction.makeTransferTransaction(
         [{ tx: createTx, output_index: 0 }],
         [aliceOutput],
@@ -85,11 +84,10 @@ test('Create TRANSFER transaction based on CREATE transaction', t => {
             { output_index: 0, transaction_id: createTx.id }
         )]
     ]
-
     // NOTE: `src/transaction/makeTransaction` is `export default`, hence we
     // can only mock `makeTransaction.default` with a hack:
     // See: https://stackoverflow.com/a/33676328/1263876
-    t.truthy(Transaction.makeTransaction.default.calledWith(...expected))
+    t.truthy(Transaction.makeTransaction.calledWith(...expected))
     Transaction.makeTransaction.default.restore()
 })