diff --git a/libs/canvas/arrow.cc b/libs/canvas/arrow.cc
index 5a48375bb8..f82f2d96de 100644
--- a/libs/canvas/arrow.cc
+++ b/libs/canvas/arrow.cc
@@ -203,6 +203,7 @@ Arrow::setup_polygon (int which)
 		points.push_back (Duple (0, 0));
 		points.push_back (Duple (_heads[which].width, 0));
 		points.push_back (Duple (_heads[which].width / 2, _heads[which].height));
+		points.push_back (Duple (0, 0));
 	}
 
 	_heads[which].polygon->set (points);