diff --git a/gtk2_ardour/ardour_ui_ed.cc b/gtk2_ardour/ardour_ui_ed.cc
index b0e0bc1006..e2e791f93c 100644
--- a/gtk2_ardour/ardour_ui_ed.cc
+++ b/gtk2_ardour/ardour_ui_ed.cc
@@ -357,6 +357,8 @@ ARDOUR_UI::install_actions ()
 	global_actions.register_action (common_actions, X_("previous-tab"), _("Previous Tab"), sigc::mem_fun (*this, &ARDOUR_UI::step_up_through_tabs));
 	global_actions.register_action (common_actions, X_("next-tab"), _("Next Tab"), sigc::mem_fun (*this, &ARDOUR_UI::step_down_through_tabs));
 
+	global_actions.register_action (common_actions, X_("toggle-editor-and-mixer"), _("Toggle Editor & Mixer"), sigc::mem_fun (*this, &ARDOUR_UI::toggle_editor_and_mixer));
+
 	/* windows visibility actions */
 
 	global_actions.register_toggle_action (common_actions, X_("ToggleMaximalEditor"), _("Maximise Editor Space"), sigc::mem_fun (*this, &ARDOUR_UI::toggle_editing_space));