diff --git a/libs/surfaces/generic_midi/generic_midi_control_protocol.cc b/libs/surfaces/generic_midi/generic_midi_control_protocol.cc
index 52ec2dcd71..bff46462a7 100644
--- a/libs/surfaces/generic_midi/generic_midi_control_protocol.cc
+++ b/libs/surfaces/generic_midi/generic_midi_control_protocol.cc
@@ -986,3 +986,9 @@ GenericMidiControlProtocol::prev_bank()
 		reset_controllables ();
 	}
 }
+
+void
+GenericMidiControlProtocol::set_motorised (bool m)
+{
+	_motorised = m;
+}
diff --git a/libs/surfaces/generic_midi/generic_midi_control_protocol.h b/libs/surfaces/generic_midi/generic_midi_control_protocol.h
index 0cdb77567d..a86808948f 100644
--- a/libs/surfaces/generic_midi/generic_midi_control_protocol.h
+++ b/libs/surfaces/generic_midi/generic_midi_control_protocol.h
@@ -81,6 +81,8 @@ class GenericMidiControlProtocol : public ARDOUR::ControlProtocol {
 	void next_bank ();
 	void prev_bank ();
 
+	void set_motorised (bool);
+	
 	bool motorised () const {
 		return _motorised;
 	}