diff --git a/Kinetic_surface_reconstruction/examples/Kinetic_surface_reconstruction/include/Parameters.h b/Kinetic_surface_reconstruction/examples/Kinetic_surface_reconstruction/include/Parameters.h
index 0f47d8bb8bd..090ac66f911 100644
--- a/Kinetic_surface_reconstruction/examples/Kinetic_surface_reconstruction/include/Parameters.h
+++ b/Kinetic_surface_reconstruction/examples/Kinetic_surface_reconstruction/include/Parameters.h
@@ -52,7 +52,7 @@ namespace KSR {
 
     // Reconstruction.
     bool use_ground;
-    FT graphcut_beta; // magic parameter between 0 and 1
+    FT graphcut_lambda; // magic parameter between 0 and 1
     //std::map<typename KSP::Face_support, bool> external_nodes;
 
     // Constructor.
@@ -81,7 +81,7 @@ namespace KSR {
       reorient(false),
       use_ground(false),
       // reconstruction
-      graphcut_beta(FT(1) / FT(2))
+      graphcut_lambda(FT(1) / FT(2))
     { }
 
   };
diff --git a/Kinetic_surface_reconstruction/examples/Kinetic_surface_reconstruction/ksr_parameters.cpp b/Kinetic_surface_reconstruction/examples/Kinetic_surface_reconstruction/ksr_parameters.cpp
index 019ec529797..123c7066af3 100644
--- a/Kinetic_surface_reconstruction/examples/Kinetic_surface_reconstruction/ksr_parameters.cpp
+++ b/Kinetic_surface_reconstruction/examples/Kinetic_surface_reconstruction/ksr_parameters.cpp
@@ -74,7 +74,7 @@ void parse_terminal(Terminal_parser& parser, Parameters& parameters) {
   parser.add_val_parameter("-osize", parameters.max_octree_node_size);
 
   // Reconstruction.
-  parser.add_val_parameter("-lambda", parameters.graphcut_beta);
+  parser.add_val_parameter("-lambda", parameters.graphcut_lambda);
   parser.add_val_parameter("-ground", parameters.use_ground);
 
   // Debug.
@@ -146,9 +146,7 @@ int main(const int argc, const char** argv) {
   std::cout << "maximum_angle " << parameters.maximum_angle << std::endl;
   std::cout << "min_region_size " << parameters.min_region_size << std::endl;
   std::cout << "k " << parameters.k_intersections << std::endl;
-  std::cout << "graphcut_beta " << parameters.graphcut_beta << std::endl;
-
-  std::cout << parameters.regorthogonal << " " << parameters.regsymmetric << std::endl;
+  std::cout << "graphcut_lambda " << parameters.graphcut_lambda << std::endl;
 
   auto param = CGAL::parameters::maximum_distance(parameters.maximum_distance)
     .maximum_angle(parameters.maximum_angle)
@@ -190,27 +188,27 @@ int main(const int argc, const char** argv) {
 
   std::map<typename KSR::KSP::Face_support, bool> external_nodes;
 
-  external_nodes[KSR::KSP::Face_support::ZMIN] = true;
-
-  if (parameters.use_ground)
-    ksr.reconstruct_with_ground(parameters.graphcut_beta, std::back_inserter(vtx), std::back_inserter(polylist));
+  if (parameters.use_ground) {
+    external_nodes[KSR::KSP::Face_support::ZMIN] = false;
+    ksr.reconstruct_with_ground(parameters.graphcut_lambda, std::back_inserter(vtx), std::back_inserter(polylist));
+  }
   else
-    ksr.reconstruct(parameters.graphcut_beta, external_nodes, std::back_inserter(vtx), std::back_inserter(polylist));
+    ksr.reconstruct(parameters.graphcut_lambda, external_nodes, std::back_inserter(vtx), std::back_inserter(polylist));
 
   FT after_reconstruction = timer.time();
 
   if (polylist.size() > 0)
-    CGAL::IO::write_polygon_soup("polylist_" + std::to_string(parameters.graphcut_beta) + (parameters.use_ground ? "_g" : "_") + ".off", vtx, polylist);
+    CGAL::IO::write_polygon_soup("polylist_" + std::to_string(parameters.graphcut_lambda) + (parameters.use_ground ? "_g" : "_") + ".off", vtx, polylist);
 
   timer.stop();
   const FT time = static_cast<FT>(timer.time());
 
-  std::vector<FT> lambdas{0.3, 0.5, 0.7, 0.73, 0.75, 0.77, 0.8, 0.9, 0.95, 0.99};
+  std::vector<FT> lambdas{0.3, 0.5, 0.6, 0.7, 0.73, 0.75, 0.77, 0.8, 0.9, 0.95, 0.99};
 
   bool non_empty = false;
 
   for (FT l : lambdas) {
-    if (l == parameters.graphcut_beta)
+    if (l == parameters.graphcut_lambda)
       continue;
 
     vtx.clear();
diff --git a/Kinetic_surface_reconstruction/include/CGAL/Kinetic_surface_reconstruction_3.h b/Kinetic_surface_reconstruction/include/CGAL/Kinetic_surface_reconstruction_3.h
index cc8e414f2f8..7df975df13c 100644
--- a/Kinetic_surface_reconstruction/include/CGAL/Kinetic_surface_reconstruction_3.h
+++ b/Kinetic_surface_reconstruction/include/CGAL/Kinetic_surface_reconstruction_3.h
@@ -905,9 +905,6 @@ private:
         std::cout << "outside face" << std::endl;
     }
 
-    if (m_verbose)
-      std::cout << "polygon regions " << polygon_regions.size() << std::endl;
-
     if (m_debug)
       KSP_3::internal::dump_polygons(polygon_regions, "faces_by_region-" + std::to_string(lambda) + ".ply");
 
@@ -1435,11 +1432,7 @@ private:
         }
       }
     }
-    if (m_verbose) {
-      for (std::size_t i = 0; i < polygons.size(); i++)
-        if (!merged[i])
-          std::cout << "ghost edge could not be placed" << std::endl;
-    }
+
     if (outer != 0)
       polygons[0] = std::move(polygons[outer]);
     polygons.resize(1);
@@ -1897,9 +1890,6 @@ private:
       for (std::size_t i = 0; i < other_ground.size(); i++)
         std::move(m_regions[other_ground[i]].second.begin(), m_regions[other_ground[i]].second.end(), std::back_inserter(m_regions[m_ground_polygon_index].second));
 
-      if (m_verbose)
-        std::cout << "ground polygon " << m_ground_polygon_index << ", merging other polygons" << std::endl;
-
       while (other_ground.size() != 0) {
         m_regions.erase(m_regions.begin() + other_ground.back());
         other_ground.pop_back();