diff --git a/gtk2_ardour/mixer_strip.cc b/gtk2_ardour/mixer_strip.cc
index ac81390a91..3fb9f92be4 100644
--- a/gtk2_ardour/mixer_strip.cc
+++ b/gtk2_ardour/mixer_strip.cc
@@ -1204,6 +1204,13 @@ MixerStrip::build_route_ops_menu ()
 			selection.set (stav);
 		}
 
+#ifdef MIXBUS
+		if (_route->mixbus()) {
+			/* no dup, no remove */
+			return;
+		}
+#endif
+
 		if (!_route->is_master()) {
 			items.push_back (SeparatorElem());
 			items.push_back (MenuElem (_("Duplicate..."), sigc::mem_fun (*this, &RouteUI::duplicate_selected_routes)));