diff --git a/Arrangement_on_surface_2/test/Arrangement_on_surface_2/data/polylines/compare_y_at_x b/Arrangement_on_surface_2/test/Arrangement_on_surface_2/data/polylines/compare_y_at_x
index 21ab0e9d5e2..c29ba1aef11 100644
--- a/Arrangement_on_surface_2/test/Arrangement_on_surface_2/data/polylines/compare_y_at_x
+++ b/Arrangement_on_surface_2/test/Arrangement_on_surface_2/data/polylines/compare_y_at_x
@@ -5,6 +5,8 @@ compare_y_at_x 3 0 EQUAL
 compare_y_at_x 4 0 EQUAL
 compare_y_at_x 5 0 EQUAL
 compare_y_at_x 6 0 EQUAL
+compare_y_at_x 7 0 SMALLER
+compare_y_at_x 22 0 LARGER
 #
 compare_y_at_x 7  1 SMALLER
 compare_y_at_x 8  1 EQUAL
diff --git a/Arrangement_on_surface_2/test/Arrangement_on_surface_2/data/polylines/compare_y_at_x.pt b/Arrangement_on_surface_2/test/Arrangement_on_surface_2/data/polylines/compare_y_at_x.pt
index b9be4fc700a..93443bba5d0 100644
--- a/Arrangement_on_surface_2/test/Arrangement_on_surface_2/data/polylines/compare_y_at_x.pt
+++ b/Arrangement_on_surface_2/test/Arrangement_on_surface_2/data/polylines/compare_y_at_x.pt
@@ -20,3 +20,4 @@
 4/1 3/1
 4/1 4/1
 4/1 5/1
+0/1 7/1