diff --git a/wire/bench_test.go b/wire/bench_test.go
index a5a71625..43f6159b 100644
--- a/wire/bench_test.go
+++ b/wire/bench_test.go
@@ -571,17 +571,6 @@ func BenchmarkReadTxInBuf(b *testing.B) {
 func BenchmarkWriteTxIn(b *testing.B) {
 	b.ReportAllocs()
 
-	txIn := blockOne.Transactions[0].TxIn[0]
-	for i := 0; i < b.N; i++ {
-		writeTxIn(ioutil.Discard, 0, 0, txIn)
-	}
-}
-
-// BenchmarkWriteTxInBuf performs a benchmark on how long it takes to write
-// a transaction input.
-func BenchmarkWriteTxInBuf(b *testing.B) {
-	b.ReportAllocs()
-
 	buf := binarySerializer.Borrow()
 	txIn := blockOne.Transactions[0].TxIn[0]
 	for i := 0; i < b.N; i++ {
diff --git a/wire/msgtx.go b/wire/msgtx.go
index 954691c0..e8f97fbb 100644
--- a/wire/msgtx.go
+++ b/wire/msgtx.go
@@ -1127,15 +1127,6 @@ func readTxInBuf(r io.Reader, pver uint32, version int32, ti *TxIn,
 	return nil
 }
 
-// writeTxIn encodes ti to the bitcoin protocol encoding for a transaction
-// input (TxIn) to w.
-func writeTxIn(w io.Writer, pver uint32, version int32, ti *TxIn) error {
-	buf := binarySerializer.Borrow()
-	err := writeTxInBuf(w, pver, version, ti, buf)
-	binarySerializer.Return(buf)
-	return err
-}
-
 // writeTxInBuf encodes ti to the bitcoin protocol encoding for a transaction
 // input (TxIn) to w. If b is non-nil, the provided buffer will be used for
 // serializing small values. Otherwise a buffer will be drawn from the