diff --git a/gtk2_ardour/ardour_ui.cc b/gtk2_ardour/ardour_ui.cc
index 2e0749ca5e..9396ffb89f 100644
--- a/gtk2_ardour/ardour_ui.cc
+++ b/gtk2_ardour/ardour_ui.cc
@@ -268,6 +268,7 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[], const char* localedir)
 	, last_key_press_time (0)
 	, save_as_dialog (0)
 	, meterbridge (0)
+	, rc_option_editor (0)
 	, speaker_config_window (X_("speaker-config"), _("Speaker Configuration"))
 	, key_editor (X_("key-editor"), _("Key Bindings"))
 	, add_route_dialog (X_("add-routes"), _("Add Tracks/Busses"))