diff --git a/gtk2_ardour/audio_region_view.cc b/gtk2_ardour/audio_region_view.cc
index cf951e9da6..70966b1dff 100644
--- a/gtk2_ardour/audio_region_view.cc
+++ b/gtk2_ardour/audio_region_view.cc
@@ -73,7 +73,6 @@ AudioRegionView::AudioRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView
 	, fade_in_handle(0)
 	, fade_out_handle(0)
 	, fade_position_line(0)
-	, gain_line(0)
 	, _amplitude_above_axis(1.0)
 	, _flags(0)
 	, fade_color(0)
@@ -90,7 +89,6 @@ AudioRegionView::AudioRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView
 	, fade_in_handle(0)
 	, fade_out_handle(0)
 	, fade_position_line(0)
-	, gain_line(0)
 	, _amplitude_above_axis(1.0)
 	, _flags(0)
 	, fade_color(0)
@@ -104,7 +102,6 @@ AudioRegionView::AudioRegionView (const AudioRegionView& other, boost::shared_pt
 	, fade_in_handle(0)
 	, fade_out_handle(0)
 	, fade_position_line(0)
-	, gain_line(0)
 	, _amplitude_above_axis (other._amplitude_above_axis)
 	, _flags (other._flags)
 	, fade_color(0)
@@ -180,7 +177,7 @@ AudioRegionView::init (Gdk::Color const & basic_color, bool wfd)
 	const string line_name = _region->name() + ":gain";
 
 	if (!Profile->get_sae()) {
-		gain_line = new AudioRegionGainLine (line_name, *this, *group, audio_region()->envelope());
+		gain_line.reset (new AudioRegionGainLine (line_name, *this, *group, audio_region()->envelope()));
 	}
 
 	if (Config->get_show_region_gain()) {
@@ -240,8 +237,6 @@ AudioRegionView::~AudioRegionView ()
 	}
 
 	/* all waveviews etc will be destroyed when the group is destroyed */
-
-	delete gain_line;
 }
 
 boost::shared_ptr<ARDOUR::AudioRegion>
@@ -969,7 +964,7 @@ AudioRegionView::peaks_ready_handler (uint32_t which)
 void
 AudioRegionView::add_gain_point_event (ArdourCanvas::Item *item, GdkEvent *ev)
 {
-	if (gain_line == 0) {
+	if (!gain_line) {
 		return;
 	}
 
diff --git a/gtk2_ardour/audio_region_view.h b/gtk2_ardour/audio_region_view.h
index 5afa63b03b..9dc7e507a1 100644
--- a/gtk2_ardour/audio_region_view.h
+++ b/gtk2_ardour/audio_region_view.h
@@ -91,7 +91,7 @@ class AudioRegionView : public RegionView
 	void add_gain_point_event (ArdourCanvas::Item *item, GdkEvent *event);
 	void remove_gain_point_event (ArdourCanvas::Item *item, GdkEvent *event);
 
-	AudioRegionGainLine* get_gain_line() const { return gain_line; }
+	boost::shared_ptr<AudioRegionGainLine> get_gain_line() const { return gain_line; }
 
 	void region_changed (const PBD::PropertyChange&);
 	void envelope_active_changed ();
@@ -142,7 +142,7 @@ class AudioRegionView : public RegionView
 	ArdourCanvas::SimpleRect*        fade_out_handle; ///< fade out handle, or 0
 	ArdourCanvas::SimpleLine*        fade_position_line;
 
-	AudioRegionGainLine * gain_line;
+	boost::shared_ptr<AudioRegionGainLine> gain_line;
 
 	double _amplitude_above_axis;