diff --git a/lib/transaction/transaction.js b/lib/transaction/transaction.js
index cc7e4bc..1d964ac 100644
--- a/lib/transaction/transaction.js
+++ b/lib/transaction/transaction.js
@@ -664,7 +664,7 @@ Transaction.prototype.getSignatures = function(privKey, sigtype) {
  *
  * @param {Object} signature
  * @param {number} signature.inputIndex
- * @param {number} signature.sighash
+ * @param {number} signature.sigtype
  * @param {PublicKey} signature.publicKey
  * @param {Signature} signature.signature
  * @return {Transaction} this, for chaining