diff --git a/gtk2_ardour/missing_plugin_dialog.cc b/gtk2_ardour/missing_plugin_dialog.cc
index ddbca3a5f4..fe0a597008 100644
--- a/gtk2_ardour/missing_plugin_dialog.cc
+++ b/gtk2_ardour/missing_plugin_dialog.cc
@@ -42,7 +42,7 @@ MissingPluginDialog::MissingPluginDialog (Session * s, list<string> const & plug
 		t << *i << "\n";
 	}
 
-	t << "\nThose plugins and any following them on a track or buss have been disabled, and will be hidden.\n";
+	t << "\nThose plugins will be replaced with inactive stubs.\n";
 	t << "It is recommended that you install the missing plugins and re-load the session.\n";
 
         m->set_markup (t.str ());
diff --git a/gtk2_ardour/processor_box.cc b/gtk2_ardour/processor_box.cc
index 5d21de2f04..32140a8a54 100644
--- a/gtk2_ardour/processor_box.cc
+++ b/gtk2_ardour/processor_box.cc
@@ -120,6 +120,9 @@ ProcessorEntry::ProcessorEntry (ProcessorBox* parent, boost::shared_ptr<Processo
 	if (boost::dynamic_pointer_cast<PeakMeter> (_processor)) {
 		_button.set_elements(ArdourButton::Element(_button.elements() & ~ArdourButton::Indicator));
 	}
+	if (boost::dynamic_pointer_cast<UnknownProcessor> (_processor)) {
+		_button.set_elements(ArdourButton::Element(_button.elements() & ~ArdourButton::Indicator));
+	}
 	if (_processor) {
 
 		_vbox.pack_start (_routing_icon);