diff --git a/Convex_hull_3/test/Convex_hull_3/quickhull_degenerate_test_3.cpp b/Convex_hull_3/test/Convex_hull_3/quickhull_degenerate_test_3.cpp
index 731e0d7fd1b..ead5fa229d9 100644
--- a/Convex_hull_3/test/Convex_hull_3/quickhull_degenerate_test_3.cpp
+++ b/Convex_hull_3/test/Convex_hull_3/quickhull_degenerate_test_3.cpp
@@ -122,7 +122,8 @@ void test_coplanar_arbitrary()
    CGAL::convex_hull_3(points.begin(), points.end(), ch_object, Traits());
    Polyhedron_3 P;
    Segment_3 seg;
-   assert( CGAL::assign(P, ch_object) || CGAL::assign(seg, ch_object));
+   Triangle_3 tri;
+   assert( CGAL::assign(P, ch_object) || CGAL::assign(seg, ch_object) || CGAL::assign(tri, ch_object) );
 }
 
 void test_collinear()