diff --git a/Surface_mesh/test/Surface_mesh/sm_circulator_concept_checks.cpp b/Surface_mesh/test/Surface_mesh/sm_circulator_concept_checks.cpp
index c222bf37cd3..f6e79c0ff04 100644
--- a/Surface_mesh/test/Surface_mesh/sm_circulator_concept_checks.cpp
+++ b/Surface_mesh/test/Surface_mesh/sm_circulator_concept_checks.cpp
@@ -21,7 +21,7 @@ typedef SM::Halfedge_around_target_circulator Face_around_face_circulator;
 template <typename Circ>
 void test()
 {
-  BOOST_CONCEPT_ASSERT((CGAL::Concepts::BidirectionalCirculator<Circ>)) CGAL_UNUSED;
+  BOOST_CONCEPT_ASSERT((CGAL::Concepts::BidirectionalCirculator<Circ>));
   Circ circ;
   if(circ){}
   if(circ == NULL){}