diff --git a/ardour.rc.in b/ardour.rc.in
index ab34ae29d4..44738f8062 100644
--- a/ardour.rc.in
+++ b/ardour.rc.in
@@ -2,6 +2,7 @@
 <Ardour>
   <MIDI-port tag="%MIDITAG%" device="ardour" type="%MIDITYPE%" mode="duplex"/>
   <MIDI-port tag="control" device="ardour" type="%MIDITYPE%" mode="duplex"/>
+  <MIDI-port tag="mcu" device="ardour" type="%MIDITYPE%" mode="duplex"/>
   <Config>
     <Option name="minimum-disk-io-bytes" value="262144"/>
     <Option name="track-buffer-seconds" value="5.000000"/>
diff --git a/libs/surfaces/generic_midi/midicontrollable.cc b/libs/surfaces/generic_midi/midicontrollable.cc
index 71cdde3fd3..1f00e58167 100644
--- a/libs/surfaces/generic_midi/midicontrollable.cc
+++ b/libs/surfaces/generic_midi/midicontrollable.cc
@@ -35,7 +35,7 @@ MIDIControllable::MIDIControllable (Port& p, Controllable& c, bool is_bistate)
 	: controllable (c), _port (p), bistate (is_bistate)
 {
 	setting = false;
-	last_written = 0; // got a better idea ?
+	last_value = 0; // got a better idea ?
 	control_type = none;
 	_control_description = "MIDI Control: none";
 	control_additional = (byte) -1;
@@ -143,7 +143,7 @@ MIDIControllable::midi_sense_note (Parser &p, EventTwoBytes *msg, bool is_on)
 		}
 	}
 
-	last_written = (MIDI::byte) (controllable.get_value() * 127.0); // to prevent feedback fights
+	last_value = (MIDI::byte) (controllable.get_value() * 127.0); // to prevent feedback fights
 }
 
 void
@@ -160,7 +160,7 @@ MIDIControllable::midi_sense_controller (Parser &, EventTwoBytes *msg)
 			}
 		}
 
-		last_written = (MIDI::byte) (controllable.get_value() * 127.0); // to prevent feedback fights
+		last_value = (MIDI::byte) (controllable.get_value() * 127.0); // to prevent feedback fights
 	}
 }
 
@@ -171,7 +171,7 @@ MIDIControllable::midi_sense_program_change (Parser &p, byte msg)
 
 	if (!bistate) {
 		controllable.set_value (msg/127.0);
-		last_written = (MIDI::byte) (controllable.get_value() * 127.0); // to prevent feedback fights
+		last_value = (MIDI::byte) (controllable.get_value() * 127.0); // to prevent feedback fights
 	} 
 }
 
@@ -183,7 +183,7 @@ MIDIControllable::midi_sense_pitchbend (Parser &p, pitchbend_t pb)
 	/* XXX gack - get rid of assumption about typeof pitchbend_t */
 
 	controllable.set_value ((pb/(float) SHRT_MAX));
-	last_written = (MIDI::byte) (controllable.get_value() * 127.0); // to prevent feedback fights
+	last_value = (MIDI::byte) (controllable.get_value() * 127.0); // to prevent feedback fights
 }			
 
 void
@@ -313,11 +313,11 @@ MIDIControllable::write_feedback (MIDI::byte* buf, int32_t& bufsize, bool force)
 
 		MIDI::byte gm = (MIDI::byte) (controllable.get_value() * 127.0);
 		
-		if (gm != last_written) {
+		if (gm != last_value) {
 			*buf++ = (0xF0 & control_type) | (0xF & control_channel);
 			*buf++ = control_additional; /* controller number */
 			*buf++ = gm;
-			last_written = gm;
+			last_value = gm;
 			bufsize -= 3;
 		}
 	}
diff --git a/libs/surfaces/generic_midi/midicontrollable.h b/libs/surfaces/generic_midi/midicontrollable.h
index 7e0243971c..4bac325feb 100644
--- a/libs/surfaces/generic_midi/midicontrollable.h
+++ b/libs/surfaces/generic_midi/midicontrollable.h
@@ -67,7 +67,7 @@ class MIDIControllable : public Stateful
 	PBD::Controllable& controllable;
 	MIDI::Port&     _port;
 	bool             setting;
-	MIDI::byte       last_written;
+	MIDI::byte       last_value;
 	bool             bistate;
 	int              midi_msg_id;      /* controller ID or note number */
 	sigc::connection midi_sense_connection[2];