diff --git a/gtk2_ardour/new_user_wizard.cc b/gtk2_ardour/new_user_wizard.cc
index 84af87a6de..f33a0f5a55 100644
--- a/gtk2_ardour/new_user_wizard.cc
+++ b/gtk2_ardour/new_user_wizard.cc
@@ -60,6 +60,7 @@
 #include "opts.h"
 #include "ui_config.h"
 #include "pbd/i18n.h"
+#include "plugin_scan_dialog.h"
 #include "utils.h"
 
 using namespace std;
@@ -444,7 +445,8 @@ void
 NewUserWizard::discover_plugins ()
 {
 	plugin_disco_button.set_sensitive (false);
-	PluginManager::instance().refresh();
+	PluginScanDialog psd (false, true);
+	psd.start ();
 }
 
 void
diff --git a/gtk2_ardour/rc_option_editor.cc b/gtk2_ardour/rc_option_editor.cc
index 60b46f6120..c7e0ad1964 100644
--- a/gtk2_ardour/rc_option_editor.cc
+++ b/gtk2_ardour/rc_option_editor.cc
@@ -74,6 +74,7 @@
 #include "keyboard.h"
 #include "meter_patterns.h"
 #include "midi_tracer.h"
+#include "plugin_scan_dialog.h"
 #include "rc_option_editor.h"
 #include "sfdb_ui.h"
 #include "transport_masters_dialog.h"
@@ -4104,12 +4105,14 @@ RCOptionEditor::parameter_changed (string const & p)
 		_plugin_prefer_inline->set_sensitive (UIConfiguration::instance().get_open_gui_after_adding_plugin() && UIConfiguration::instance().get_show_inline_display_by_default());
 #endif
 	} else if (p == "conceal-lv1-if-lv2-exists") {
-		PluginManager::instance().refresh (true);
+		plugin_scan_refresh ();
 	}
 }
 
 void RCOptionEditor::plugin_scan_refresh () {
-	PluginManager::instance().refresh();
+	/* first argument says discover new plugins, second means be verbose */
+	PluginScanDialog psd (true, true);
+	psd.start ();
 }
 
 void RCOptionEditor::clear_vst_cache () {