diff --git a/gtk2_ardour/route_processor_selection.cc b/gtk2_ardour/route_processor_selection.cc
index ac334b4b87..1b9ab2a2dc 100644
--- a/gtk2_ardour/route_processor_selection.cc
+++ b/gtk2_ardour/route_processor_selection.cc
@@ -170,6 +170,7 @@ RouteProcessorSelection::set (AxisView* r)
 	if (!shp.session()) {
 		return;
 	}
+	PresentationInfo::ChangeSuspender cs;
 	shp.session()->selection().clear_stripables ();
 	add (r, true);
 }