diff --git a/Segment_Delaunay_graph_Linf_2/include/CGAL/Segment_Delaunay_graph_Linf_2/Filtered_traits_base_2.h b/Segment_Delaunay_graph_Linf_2/include/CGAL/Segment_Delaunay_graph_Linf_2/Filtered_traits_base_2.h
index a09bef92dd2..5e07fd5d136 100644
--- a/Segment_Delaunay_graph_Linf_2/include/CGAL/Segment_Delaunay_graph_Linf_2/Filtered_traits_base_2.h
+++ b/Segment_Delaunay_graph_Linf_2/include/CGAL/Segment_Delaunay_graph_Linf_2/Filtered_traits_base_2.h
@@ -203,7 +203,8 @@ public:
   //			C2E, C2F, E2C, F2C>
   //Construct_sdg_bisector_2;
 
-  typedef char Has_bisector_constructions_type;
+  // Linf traits contain bisector constructions
+  typedef Tag_true Tag_has_bisector_constructions;
 
   template<class Gt, class M>
   class Construct_sdg_bisector_2
diff --git a/Segment_Delaunay_graph_Linf_2/include/CGAL/Segment_Delaunay_graph_Linf_2/Traits_base_2.h b/Segment_Delaunay_graph_Linf_2/include/CGAL/Segment_Delaunay_graph_Linf_2/Traits_base_2.h
index c533566a075..cbcd0f61c50 100644
--- a/Segment_Delaunay_graph_Linf_2/include/CGAL/Segment_Delaunay_graph_Linf_2/Traits_base_2.h
+++ b/Segment_Delaunay_graph_Linf_2/include/CGAL/Segment_Delaunay_graph_Linf_2/Traits_base_2.h
@@ -47,7 +47,8 @@ public:
   //CGAL_SEGMENT_DELAUNAY_GRAPH_LINF_2_NS::Construct_sdg_bisector_2<K,MTag>
   //Construct_sdg_bisector_2;
 
-  typedef char Has_bisector_constructions_type;
+  // Linf traits contain bisector constructions
+  typedef Tag_true Tag_has_bisector_constructions;
 
   template<class Gt, class M>
   class Construct_sdg_bisector_2