diff --git a/stream/mts/psi/op.go b/stream/mts/psi/op.go
index 78730fc2..18fcd42c 100644
--- a/stream/mts/psi/op.go
+++ b/stream/mts/psi/op.go
@@ -64,16 +64,16 @@ func HasLocation(p []byte) error {
 // UpdateTime takes the byte slice representation of a psi-pmt as well as a time
 // as an integer and attempts to update the time descriptor in the pmt with the
 // given time if the time descriptor exists, otherwise an error is returned
-func UpdateTime(d []byte, t uint64) error {
-	err := HasTime(d)
+func UpdateTime(dst []byte, t uint64) error {
+	err := HasTime(dst)
 	if err != nil {
 		return err
 	}
 	ts := TimeBytes(uint64(t))
-	for i := range d[timeDataIndx : timeDataIndx+timeDataSize] {
-		d[i+timeDataIndx] = ts[i]
+	for i := range dst[timeDataIndx : timeDataIndx+timeDataSize] {
+		dst[i+timeDataIndx] = ts[i]
 	}
-	d = updateCrc(d)
+	dst = updateCrc(dst)
 	return nil
 }