diff --git a/include/CGAL/Segment_Delaunay_graph_Linf_2/Vertex_conflict_C2.h b/include/CGAL/Segment_Delaunay_graph_Linf_2/Vertex_conflict_C2.h
index e1ceb4622f0..981659ffc3f 100644
--- a/include/CGAL/Segment_Delaunay_graph_Linf_2/Vertex_conflict_C2.h
+++ b/include/CGAL/Segment_Delaunay_graph_Linf_2/Vertex_conflict_C2.h
@@ -868,6 +868,7 @@ private:
         Point_2 pnt_on_seg;
 
         if (is_same_psrc_q or is_same_ptrg_q) {
+          pnt_on_seg = pnt;
           Point_2 otherpnt;
           if (is_same_psrc_q) {
             otherpnt = seg.target();
@@ -976,6 +977,9 @@ private:
 
           // here p and t have common endpoint testp
 
+          std::cout << "debug testp=" << testp << " pnt="
+            << pnt << " pnt_on_seg=" << pnt_on_seg << std::endl;
+
           // check if testp equals pnt_on_seg
 
           if ((cmpx(testp, pnt_on_seg) == EQUAL ) and