diff --git a/Mesh_2/include/CGAL/lloyd_optimize_mesh_2.h b/Mesh_2/include/CGAL/lloyd_optimize_mesh_2.h
index 1ee989ea4e5..20244335903 100644
--- a/Mesh_2/include/CGAL/lloyd_optimize_mesh_2.h
+++ b/Mesh_2/include/CGAL/lloyd_optimize_mesh_2.h
@@ -30,7 +30,7 @@
 #include <fstream>
 
 #ifdef BOOST_PARAMETER_MAX_ARITY
-#  if (BOOST_PARAMETER_MAX_ARITY < 12)
+#  if (BOOST_PARAMETER_MAX_ARITY < 8)
 #    error "BOOST_PARAMETER_MAX_ARITY must be at least 8 for CGAL::lloyd_optimize_mesh_2()"
 #  endif
 #else