diff --git a/gtk2_ardour/route_processor_selection.cc b/gtk2_ardour/route_processor_selection.cc
index ab512d3bb1..836e63fcfe 100644
--- a/gtk2_ardour/route_processor_selection.cc
+++ b/gtk2_ardour/route_processor_selection.cc
@@ -127,6 +127,7 @@ RouteProcessorSelection::remove (AxisView* r)
 void
 RouteProcessorSelection::set (AxisView* r)
 {
+	PresentationInfo::ChangeSuspender cs;
 	clear_routes ();
 	add (r);
 }