-#include <gtkmm2ext/click_box.h>
-#include <gtkmm2ext/focus_entry.h>
-#include <gtkmm2ext/slider_controller.h>
+#include "ardour/chan_count.h"
+#include "ardour/types.h"
+#include "ardour/session_handle.h"
+
+#include "gtkmm2ext/click_box.h"
+#include "gtkmm2ext/focus_entry.h"
+#include "gtkmm2ext/slider_controller.h"