diff --git a/lib/wallet/wallet.js b/lib/wallet/wallet.js
index 5a506311..06daedcd 100644
--- a/lib/wallet/wallet.js
+++ b/lib/wallet/wallet.js
@@ -57,6 +57,8 @@ const Mnemonic = HD.Mnemonic;
  * @param {Number?} options.m - `m` value for multisig.
  * @param {Number?} options.n - `n` value for multisig.
  * @param {String?} options.id - Wallet ID (used for storage)
+ * @param {String?} options.mnemonic - mnemonic phrase to use to instantiate an 
+ * hd private key for wallet
  * (default=account key "address").
  */