diff --git a/gtk2_ardour/rc_option_editor.cc b/gtk2_ardour/rc_option_editor.cc
index 3d26e68f08..c712b6a864 100644
--- a/gtk2_ardour/rc_option_editor.cc
+++ b/gtk2_ardour/rc_option_editor.cc
@@ -2816,6 +2816,16 @@ if (!Profile->get_mixbus()) {
 	add_option (_("Plugins"), bo);
 	Gtkmm2ext::UI::instance()->set_tip (bo->tip_widget(),
 					    _("<b>When enabled</b> Audio Unit Plugins are discovered on application start. When disabled AU plugins will only be available after triggering a 'Scan' manually. The first successful scan will enable AU auto-scan, Any crash during plugin discovery will disable it."));
+
+	add_option (_("Plugins"),
+			new RcActionButton (_("Clear"),
+				sigc::mem_fun (*this, &RCOptionEditor::clear_au_cache),
+				_("AU Cache:")));
+
+	add_option (_("Plugins"),
+			new RcActionButton (_("Clear"),
+				sigc::mem_fun (*this, &RCOptionEditor::clear_au_blacklist),
+				_("AU Blacklist:")));
 #endif
 
 #if (defined WINDOWS_VST_SUPPORT || defined LXVST_SUPPORT || defined AUDIOUNIT_SUPPORT || defined HAVE_LV2)