diff --git a/gtk2_ardour/editor_sources.cc b/gtk2_ardour/editor_sources.cc
index 5b33876283..eecc26f53f 100644
--- a/gtk2_ardour/editor_sources.cc
+++ b/gtk2_ardour/editor_sources.cc
@@ -282,6 +282,8 @@ EditorSources::set_session (ARDOUR::Session* s)
 	SessionHandlePtr::set_session (s);
 
 	if (s) {
+		ARDOUR::Region::RegionPropertyChanged.connect (source_property_connection, MISSING_INVALIDATOR, boost::bind (&EditorSources::source_changed, this, _1, _2), gui_context ());
+
 		ARDOUR::RegionFactory::CheckNewRegion.connect (add_source_connection, MISSING_INVALIDATOR, boost::bind (&EditorSources::add_source, this, _1), gui_context());
 
 		s->SourceRemoved.connect (remove_source_connection, MISSING_INVALIDATOR, boost::bind (&EditorSources::remove_weak_source, this, _1), gui_context());
@@ -459,9 +461,12 @@ EditorSources::add_source (boost::shared_ptr<ARDOUR::Region> region)
 }
 
 void
-EditorSources::source_changed (boost::shared_ptr<ARDOUR::Region> region)
+EditorSources::source_changed (boost::shared_ptr<ARDOUR::Region> region, PBD::PropertyChange const &)
 {
-	/* Currently never reached .. we have no mutable properties shown in the list*/
+	if ( !region->whole_file() ) {
+		/*this isn't on our list anyway; we can ignore it*/
+		return;
+	}
 
 	TreeModel::iterator i;
 	TreeModel::Children rows = _model->children();
diff --git a/gtk2_ardour/editor_sources.h b/gtk2_ardour/editor_sources.h
index 95c5109227..59647d8f36 100644
--- a/gtk2_ardour/editor_sources.h
+++ b/gtk2_ardour/editor_sources.h
@@ -86,7 +86,7 @@ private:
 
 	void freeze_tree_model ();
 	void thaw_tree_model ();
-	void source_changed (boost::shared_ptr<ARDOUR::Region>);
+	void source_changed (boost::shared_ptr<ARDOUR::Region>, PBD::PropertyChange const &);
 	void populate_row (Gtk::TreeModel::Row row, boost::shared_ptr<ARDOUR::Region> region);
 	void selection_changed ();
 
@@ -129,6 +129,7 @@ private:
 
 	Glib::RefPtr<Gtk::TreeStore> _model;
 
+	PBD::ScopedConnection source_property_connection;
 	PBD::ScopedConnection add_source_connection;
 	PBD::ScopedConnection remove_source_connection;
 	PBD::ScopedConnectionList remove_region_connections;