diff --git a/cmd/rv/main.go b/cmd/rv/main.go
index 47d3f694..834f53a3 100644
--- a/cmd/rv/main.go
+++ b/cmd/rv/main.go
@@ -103,6 +103,7 @@ const (
 	profilePath      = "rv.prof"
 	pkg              = "rv: "
 	runPreDelay      = 20 * time.Second
+	bitratePin       = "X36"
 )
 
 // This is set to true if the 'profile' build tag is provided on build.
@@ -269,11 +270,11 @@ func sleep(ns *netsender.Sender, l *logger.Logger) {
 }
 
 // readPin provides a callback function of consistent signature for use by
-// netsender to retrieve software defined pin values e.g. revid bitrate (X23).
+// netsender to retrieve software defined pin values e.g. revid bitrate.
 func readPin(rv *revid.Revid) func(pin *netsender.Pin) error {
 	return func(pin *netsender.Pin) error {
 		switch {
-		case pin.Name == "X23":
+		case pin.Name == bitratePin:
 			pin.Value = -1
 			if rv != nil {
 				pin.Value = rv.Bitrate()