diff --git a/gtk2_ardour/automation_streamview.cc b/gtk2_ardour/automation_streamview.cc
index 3eeb3bd6eb..fad14006b2 100644
--- a/gtk2_ardour/automation_streamview.cc
+++ b/gtk2_ardour/automation_streamview.cc
@@ -225,4 +225,14 @@ AutomationStreamView::has_automation () const
 	return false;
 }
 
-			
+void
+AutomationStreamView::set_interpolation (AutomationList::InterpolationStyle s)
+{
+	for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
+		AutomationRegionView* arv = dynamic_cast<AutomationRegionView*> (*i);
+		assert (arv);
+		if (arv->line()) {
+			arv->line()->set_interpolation (s);
+		}
+	}
+}
diff --git a/gtk2_ardour/automation_streamview.h b/gtk2_ardour/automation_streamview.h
index f5463ca400..a3235f7b0e 100644
--- a/gtk2_ardour/automation_streamview.h
+++ b/gtk2_ardour/automation_streamview.h
@@ -56,6 +56,8 @@ class AutomationStreamView : public StreamView
 
 	bool has_automation () const;
 
+	void set_interpolation (ARDOUR::AutomationList::InterpolationStyle);
+
   private:
 	void setup_rec_box ();
 
diff --git a/gtk2_ardour/automation_time_axis.cc b/gtk2_ardour/automation_time_axis.cc
index b36ba59e0c..51923089ad 100644
--- a/gtk2_ardour/automation_time_axis.cc
+++ b/gtk2_ardour/automation_time_axis.cc
@@ -364,6 +364,10 @@ AutomationTimeAxisView::interpolation_changed ()
 	if (_line) {
 		_line->set_interpolation(style);
 	}
+
+	if (_view) {
+		_view->set_interpolation (style);
+	}
 }
 
 void
@@ -373,6 +377,9 @@ AutomationTimeAxisView::set_interpolation (AutomationList::InterpolationStyle st
 	if (_line) {
 		_line->set_interpolation(style);
 	}
+	if (_view) {
+		_view->set_interpolation (style);
+	}
 }
 
 void