diff --git a/coinset/coins.go b/coinset/coins.go
index 17ee5ce..1d8f4a3 100644
--- a/coinset/coins.go
+++ b/coinset/coins.go
@@ -124,8 +124,8 @@ func (cs *CoinSet) removeElement(e *list.Element) Coin {
 
 // NewMsgTxWithInputCoins takes the coins in the CoinSet and makes them
 // the inputs to a new wire.MsgTx which is returned.
-func NewMsgTxWithInputCoins(inputCoins Coins) *wire.MsgTx {
-	msgTx := wire.NewMsgTx()
+func NewMsgTxWithInputCoins(txVersion int32, inputCoins Coins) *wire.MsgTx {
+	msgTx := wire.NewMsgTx(txVersion)
 	coins := inputCoins.Coins()
 	msgTx.TxIn = make([]*wire.TxIn, len(coins))
 	for i, coin := range coins {
diff --git a/coinset/coins_test.go b/coinset/coins_test.go
index 9d8aebd..56f095e 100644
--- a/coinset/coins_test.go
+++ b/coinset/coins_test.go
@@ -109,7 +109,7 @@ func TestCoinSet(t *testing.T) {
 		t.Error("Expected first coin")
 	}
 
-	mtx := coinset.NewMsgTxWithInputCoins(cs)
+	mtx := coinset.NewMsgTxWithInputCoins(wire.TxVersion, cs)
 	if len(mtx.TxIn) != 1 {
 		t.Errorf("Expected only 1 TxIn, got %d", len(mtx.TxIn))
 	}