diff --git a/libs/ardour/triggerbox.cc b/libs/ardour/triggerbox.cc
index 6321107105..1e19a30120 100644
--- a/libs/ardour/triggerbox.cc
+++ b/libs/ardour/triggerbox.cc
@@ -3340,7 +3340,7 @@ TriggerBox::get_next_trigger ()
 		DEBUG_TRACE (DEBUG::Triggers, string_compose ("next trigger from explicit queue = %1\n", r->index()));
 		return r;
 	}
-	return 0;
+	return TriggerPtr();
 }
 
 TriggerPtr