diff --git a/Installation/CHANGES.md b/Installation/CHANGES.md
index 7133056dd81..0a50227086a 100644
--- a/Installation/CHANGES.md
+++ b/Installation/CHANGES.md
@@ -648,7 +648,7 @@ Release date: July 2023
 -   Added the class `CGAL::Surface_mesh_simplification::GarlandHeckbert_plane_and_line_policies`, which provides improved output for `CGAL::Surface_mesh_simplification::edge_collapse`.
 -   That class works the same as previous `GarlandHeckbert_policies`
 -   Its constructor takes a `Mesh` and an optional `double` parameter specifying the weight of the line policy relative to the plane policy (default: 0.01).
--   `CGAL::Surface_mesh_simplification::GarlandHeckbert_policies.h` is now an alias of `CGAL::Surface_mesh_simplification::GarlandHeckbert_plane_plus_line_policies.h` and is no longer deprecated.
+-   `CGAL::Surface_mesh_simplification::GarlandHeckbert_policies.h` is now an alias of `CGAL::Surface_mesh_simplification::GarlandHeckbert_plane_and_line_policies.h` and is no longer deprecated.
 
 ### [2D Regularized Boolean Set Operations](https://doc.cgal.org/5.6/Manual/packages.html#PkgBooleanSetOperations2)
 -   Exposed all required member functions of the
diff --git a/Surface_mesh_simplification/doc/Surface_mesh_simplification/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_plane_and_line_policies.h b/Surface_mesh_simplification/doc/Surface_mesh_simplification/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_plane_and_line_policies.h
index 783209f7978..80fd4c16676 100644
--- a/Surface_mesh_simplification/doc/Surface_mesh_simplification/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_plane_and_line_policies.h
+++ b/Surface_mesh_simplification/doc/Surface_mesh_simplification/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_plane_and_line_policies.h
@@ -45,9 +45,10 @@ public:
   /// @{
 
   /*!
-  initializes the Garland-Heckbert Plane policies.
+  initializes the Garland-Heckbert Plane policies. The `line_weight` parameter (default: 0.01) defines the weight of the line
+  policy relative to the plane policy.
   */
-  GarlandHeckbert_plane_and_line_policies(TriangleMesh& tmesh);
+  GarlandHeckbert_plane_and_line_policies(TriangleMesh& tmesh, const FT line_weight=FT(0.01));
 
   /// @}
 
diff --git a/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_plane_and_line_policies.h b/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_plane_and_line_policies.h
index 11ff1edccc1..033a0258bbe 100644
--- a/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_plane_and_line_policies.h
+++ b/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_plane_and_line_policies.h
@@ -43,8 +43,8 @@ public:
 
 public:
   GarlandHeckbert_plane_and_line_policies(TriangleMesh& tmesh,
-                                           const FT dm = FT(100),
-                                           const FT line_weight=FT(0.01))
+                                          const FT line_weight=FT(0.01),
+                                          const FT dm = FT(100))
     : Base(tmesh, FT(1.)/line_weight, dm)
   { }
 
diff --git a/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_plane_policies.h b/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_plane_policies.h
index 2d77132ec59..3f99ca2c751 100644
--- a/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_plane_policies.h
+++ b/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_plane_policies.h
@@ -33,10 +33,10 @@ public:
   Plane_quadric_calculator() { }
 
   template <typename VertexPointMap>
-  Mat_4 construct_quadric_from_vertex(typename boost::graph_traits<TriangleMesh>::vertex_descriptor v,
-                                      const TriangleMesh& tmesh,
-                                      const VertexPointMap point_map,
-                                      const GeomTraits& gt) const
+  Mat_4 construct_quadric_from_vertex(typename boost::graph_traits<TriangleMesh>::vertex_descriptor /*v*/,
+                                      const TriangleMesh& /*tmesh*/,
+                                      const VertexPointMap /*point_map*/,
+                                      const GeomTraits& /*gt*/) const
   {
     return Mat_4::Zero();
   }
diff --git a/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_probabilistic_plane_policies.h b/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_probabilistic_plane_policies.h
index f1f2b102c90..f7c439c845a 100644
--- a/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_probabilistic_plane_policies.h
+++ b/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_probabilistic_plane_policies.h
@@ -75,10 +75,10 @@ public:
 
 public:
   template <typename VertexPointMap>
-  Mat_4 construct_quadric_from_vertex(typename boost::graph_traits<TriangleMesh>::vertex_descriptor v,
-                                      const TriangleMesh& tmesh,
-                                      const VertexPointMap point_map,
-                                      const GeomTraits& gt) const
+  Mat_4 construct_quadric_from_vertex(typename boost::graph_traits<TriangleMesh>::vertex_descriptor /*v*/,
+                                      const TriangleMesh& /*tmesh*/,
+                                      const VertexPointMap /*point_map*/,
+                                      const GeomTraits& /*gt*/) const
   {
     return Mat_4::Zero();
   }
diff --git a/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_probabilistic_triangle_policies.h b/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_probabilistic_triangle_policies.h
index c08d66c5642..8d13f92ae63 100644
--- a/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_probabilistic_triangle_policies.h
+++ b/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_probabilistic_triangle_policies.h
@@ -75,10 +75,10 @@ public:
 
 public:
   template <typename VertexPointMap>
-  Mat_4 construct_quadric_from_vertex(typename boost::graph_traits<TriangleMesh>::vertex_descriptor v,
-                                      const TriangleMesh& tmesh,
-                                      const VertexPointMap point_map,
-                                      const GeomTraits& gt) const
+  Mat_4 construct_quadric_from_vertex(typename boost::graph_traits<TriangleMesh>::vertex_descriptor /*v*/,
+                                      const TriangleMesh& /*tmesh*/,
+                                      const VertexPointMap /*point_map*/,
+                                      const GeomTraits& /*gt*/) const
   {
     return Mat_4::Zero();
   }
diff --git a/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_triangle_policies.h b/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_triangle_policies.h
index 1f340e233ea..5318623cf5d 100644
--- a/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_triangle_policies.h
+++ b/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/GarlandHeckbert_triangle_policies.h
@@ -33,10 +33,10 @@ public:
   Triangle_quadric_calculator() { }
 
   template <typename VertexPointMap>
-  Mat_4 construct_quadric_from_vertex(typename boost::graph_traits<TriangleMesh>::vertex_descriptor v,
-                                      const TriangleMesh& tmesh,
-                                      const VertexPointMap point_map,
-                                      const GeomTraits& gt) const
+  Mat_4 construct_quadric_from_vertex(typename boost::graph_traits<TriangleMesh>::vertex_descriptor /*v*/,
+                                      const TriangleMesh& /*tmesh*/,
+                                      const VertexPointMap /*point_map*/,
+                                      const GeomTraits& /*gt*/) const
   {
     return Mat_4::Zero();
   }
diff --git a/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/internal/GarlandHeckbert_line_policies.h b/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/internal/GarlandHeckbert_line_policies.h
index de2efa13a4f..1f9aea8346d 100644
--- a/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/internal/GarlandHeckbert_line_policies.h
+++ b/Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/internal/GarlandHeckbert_line_policies.h
@@ -46,19 +46,19 @@ public:
   }
 
   template <typename VertexPointMap>
-  Mat_4 construct_quadric_from_edge(typename boost::graph_traits<TriangleMesh>::halfedge_descriptor he,
-                                    const TriangleMesh& tmesh,
-                                    const VertexPointMap point_map,
-                                    const GeomTraits& gt) const
+  Mat_4 construct_quadric_from_edge(typename boost::graph_traits<TriangleMesh>::halfedge_descriptor /*he*/,
+                                    const TriangleMesh& /*tmesh*/,
+                                    const VertexPointMap /*point_map*/,
+                                    const GeomTraits& /*gt*/) const
   {
     return Mat_4::Zero();
   }
 
   template <typename VertexPointMap>
-  Mat_4 construct_quadric_from_face(typename boost::graph_traits<TriangleMesh>::face_descriptor f,
-                                    const TriangleMesh& tmesh,
-                                    const VertexPointMap point_map,
-                                    const GeomTraits& gt) const
+  Mat_4 construct_quadric_from_face(typename boost::graph_traits<TriangleMesh>::face_descriptor /*f*/,
+                                    const TriangleMesh& /*tmesh*/,
+                                    const VertexPointMap /*point_map*/,
+                                    const GeomTraits& /*gt*/) const
   {
     return Mat_4::Zero();
   }
diff --git a/Surface_mesh_simplification/test/Surface_mesh_simplification/CMakeLists.txt b/Surface_mesh_simplification/test/Surface_mesh_simplification/CMakeLists.txt
index 310f6aec4c1..53763e6802a 100644
--- a/Surface_mesh_simplification/test/Surface_mesh_simplification/CMakeLists.txt
+++ b/Surface_mesh_simplification/test/Surface_mesh_simplification/CMakeLists.txt
@@ -13,13 +13,14 @@ create_single_source_cgal_program("test_edge_collapse_Polyhedron_3.cpp")
 create_single_source_cgal_program("test_edge_profile_link.cpp")
 create_single_source_cgal_program("test_edge_deprecated_stop_predicates.cpp")
 create_single_source_cgal_program("test_edge_collapse_stability.cpp")
-create_single_source_cgal_program("test_issue_8988.cpp")
 
 find_package(Eigen3 3.1.0 QUIET) #(3.1.0 or greater)
 include(CGAL_Eigen3_support)
 if(TARGET CGAL::Eigen3_support)
   create_single_source_cgal_program("edge_collapse_garland_heckbert_variations.cpp")
   target_link_libraries(edge_collapse_garland_heckbert_variations PRIVATE CGAL::Eigen3_support)
+  create_single_source_cgal_program("test_issue_8988.cpp")
+  target_link_libraries(test_issue_8988 PRIVATE CGAL::Eigen3_support)
 else()
   message(STATUS "NOTICE: Garland-Heckbert polices require the Eigen library, which has not been found; related examples will not be compiled.")
 endif()