diff --git a/ChangeLog b/ChangeLog
index 3df357ac..6b44c8ae 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -19595,3 +19595,6 @@
 2020-02-16 Fred Gleason <fredg@paravelsystems.com>
 	* Cleaned up the device access mode in the SAS 32000 switcher
 	driver.
+2020-02-16 Fred Gleason <fredg@paravelsystems.com>
+	* Cleaned up the device access mode in the SAS 64000 switcher
+	driver.
diff --git a/ripcd/sas64000.cpp b/ripcd/sas64000.cpp
index 0b1c6b43..aa5e6a5c 100644
--- a/ripcd/sas64000.cpp
+++ b/ripcd/sas64000.cpp
@@ -2,7 +2,7 @@
 //
 // A Rivendell switcher driver for the SAS64000
 //
-//   (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
@@ -44,7 +44,7 @@ Sas64000::Sas64000(RDMatrix *matrix,QObject *parent)
     sas_device->setSpeed(tty->baudRate());
     sas_device->setWordLength(tty->dataBits());
     sas_device->setParity(tty->parity());
-    sas_device->open(QIODevice::Unbuffered|QIODevice::ReadWrite);
+    sas_device->open(QIODevice::Unbuffered|QIODevice::WriteOnly);
   }
   delete tty;
 }