diff --git a/gtk2_ardour/trigger_ui.cc b/gtk2_ardour/trigger_ui.cc
index 4d59e1bd3f..5fa463b86b 100644
--- a/gtk2_ardour/trigger_ui.cc
+++ b/gtk2_ardour/trigger_ui.cc
@@ -67,6 +67,7 @@ Glib::RefPtr<Gtk::ActionGroup> TriggerUI::trigger_actions;
 
 TriggerUI::TriggerUI ()
 	: _renaming (false)
+	, _file_chooser (0)
 	, _launch_context_menu (0)
 	, _follow_context_menu (0)
 	, _context_menu (0)