diff --git a/gtk2_ardour/midi_tracer.cc b/gtk2_ardour/midi_tracer.cc
index 9216cac34e..daacd91386 100644
--- a/gtk2_ardour/midi_tracer.cc
+++ b/gtk2_ardour/midi_tracer.cc
@@ -65,9 +65,6 @@ MidiTracer::MidiTracer ()
 {
 	g_atomic_int_set (&_update_queued, 0);
 
-	std::string portname (string_compose(X_("MIDI Tracer %1"), ++window_count));
-	tracer_port = ARDOUR::AudioEngine::instance()->register_input_port (ARDOUR::DataType::MIDI, portname, false, ARDOUR::IsInput);
-
 	ARDOUR::AudioEngine::instance()->PortRegisteredOrUnregistered.connect
 		(_manager_connection, invalidator (*this), boost::bind (&MidiTracer::ports_changed, this), gui_context());
 
diff --git a/gtk2_ardour/midi_tracer.h b/gtk2_ardour/midi_tracer.h
index 854f2f60e5..e204659ff8 100644
--- a/gtk2_ardour/midi_tracer.h
+++ b/gtk2_ardour/midi_tracer.h
@@ -97,7 +97,6 @@ private:
 	PBD::ScopedConnection _manager_connection;
 	MIDI::Parser my_parser;
 
-	boost::shared_ptr<ARDOUR::Port>	tracer_port;
 	boost::shared_ptr<ARDOUR::MidiPort> traced_port;
 
 	static unsigned int window_count;