diff --git a/ChangeLog b/ChangeLog
index 868c6a65..5f36f5cb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -19563,3 +19563,6 @@
 2020-02-14 Fred Gleason <fredg@paravelsystems.com>
 	* Fixed a regression in the BroadcastTools SRC-8 III switcher driver
 	that could cause deadlocks and intermittent operation.
+2020-02-14 Fred Gleason <fredg@paravelsystems.com>
+	* Cleaned up the device access mode in the BroadcastTools SS12.4
+	switcher driver.
diff --git a/ripcd/btss124.cpp b/ripcd/btss124.cpp
index 0f815a7b..1c9ca3ac 100644
--- a/ripcd/btss124.cpp
+++ b/ripcd/btss124.cpp
@@ -2,7 +2,7 @@
 //
 // A Rivendell switcher driver for the BroadcastTools SS 12.4
 //
-//   (C) Copyright 2002-2019 Fred Gleason <fredg@paravelsystems.com>
+//   (C) Copyright 2002-2020 Fred Gleason <fredg@paravelsystems.com>
 //
 //   This program is free software; you can redistribute it and/or modify
 //   it under the terms of the GNU General Public License version 2 as
@@ -47,7 +47,7 @@ BtSs124::BtSs124(RDMatrix *matrix,QObject *parent)
     bt_device->setSpeed(tty->baudRate());
     bt_device->setWordLength(tty->dataBits());
     bt_device->setParity(tty->parity());
-    bt_device->open(QIODevice::Unbuffered|QIODevice::ReadWrite);
+    bt_device->open(QIODevice::Unbuffered|QIODevice::WriteOnly);
   }
   delete tty;
 }