diff --git a/libs/evoral/ControlList.cc b/libs/evoral/ControlList.cc
index 5c12102640..325e33da95 100644
--- a/libs/evoral/ControlList.cc
+++ b/libs/evoral/ControlList.cc
@@ -749,7 +749,7 @@ ControlList::editor_add_ordered (OrderedPoints const & points, bool with_guard)
 				_events.insert (s, new ControlEvent (earliest, v));
 			}
 		}
-		if (with_guard && distance > 0) {
+		if (with_guard && !distance.is_zero()) {
 			ControlEvent cp (latest, 0.0);
 			double v = unlocked_eval (latest);
 			iterator     s = lower_bound (_events.begin (), _events.end (), &cp, time_comparator);