diff --git a/gtk2_ardour/gain_meter.cc b/gtk2_ardour/gain_meter.cc
index 32b58373ca..0daa7e5470 100644
--- a/gtk2_ardour/gain_meter.cc
+++ b/gtk2_ardour/gain_meter.cc
@@ -83,6 +83,7 @@ GainMeterBase::GainMeterBase (boost::shared_ptr<IO> io, Session& s,
 	meter_menu = 0;
 	next_release_selects = false;
 	style_changed = true;
+	_width = Wide;
 
 	if (horizontal) {
 		gain_slider = manage (new HSliderController (pix,
diff --git a/gtk2_ardour/gain_meter.h b/gtk2_ardour/gain_meter.h
index 549bd091d0..cef6c02024 100644
--- a/gtk2_ardour/gain_meter.h
+++ b/gtk2_ardour/gain_meter.h
@@ -54,7 +54,7 @@ namespace Gtk {
 	class Menu;
 }
 
-class GainMeterBase
+class GainMeterBase : virtual public sigc::trackable
 {
   public:
 	GainMeterBase (boost::shared_ptr<ARDOUR::IO>, ARDOUR::Session&, const Glib::RefPtr<Gdk::Pixbuf>& pix,