diff --git a/Triangulation_on_hyperbolic_surface_2/include/CGAL/Triangulation_on_hyperbolic_surface_2.h b/Triangulation_on_hyperbolic_surface_2/include/CGAL/Triangulation_on_hyperbolic_surface_2.h
index 7ac5e711a85..c592f4d17a2 100644
--- a/Triangulation_on_hyperbolic_surface_2/include/CGAL/Triangulation_on_hyperbolic_surface_2.h
+++ b/Triangulation_on_hyperbolic_surface_2/include/CGAL/Triangulation_on_hyperbolic_surface_2.h
@@ -62,8 +62,9 @@ public:
 
     Anchor(){};
 
-    Anchor(typename Combinatorial_map_with_cross_ratios::Dart_descriptor dart, typename Traits::Hyperbolic_point_2 a,
-           typename Traits::Hyperbolic_point_2 b, typename Traits::Hyperbolic_point_2 c) {
+    Anchor(typename Combinatorial_map_with_cross_ratios::Dart_descriptor dart,
+           typename Traits::Hyperbolic_point_2 a, typename Traits::Hyperbolic_point_2 b, typename Traits::Hyperbolic_point_2 c)
+    {
       this->dart = dart;
       vertices[0] = a;
       vertices[1] = b;