diff --git a/gtk2_ardour/route_ui.cc b/gtk2_ardour/route_ui.cc
index 17d10a0d15..be172bea63 100644
--- a/gtk2_ardour/route_ui.cc
+++ b/gtk2_ardour/route_ui.cc
@@ -679,13 +679,7 @@ RouteUI::solo_press(GdkEventButton* ev)
 				DisplaySuspender ds;
 				_route->solo_control()->set_value (1.0, Controllable::NoGroup);
 
-			} else if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
-
-				// shift-click: toggle solo isolated status
-
-				_route->solo_isolate_control()->set_value (_route->solo_isolate_control()->get_value() ? 0.0 : 1.0, Controllable::UseGroup);
-				delete _solo_release;
-				_solo_release = 0;
+/*			} else if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {   do not explicitly implement Tertiary Modifier; this is the default for Momentary */
 
 			} else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {