diff --git a/Polygon_mesh_processing/examples/Polygon_mesh_processing/compute_normals_example.cpp b/Polygon_mesh_processing/examples/Polygon_mesh_processing/compute_normals_example.cpp
index c7e1fbdb21c..039c4320c84 100644
--- a/Polygon_mesh_processing/examples/Polygon_mesh_processing/compute_normals_example.cpp
+++ b/Polygon_mesh_processing/examples/Polygon_mesh_processing/compute_normals_example.cpp
@@ -29,8 +29,8 @@ int main(int argc, char* argv[])
     return 1;
   }
 
-  auto vnormals = mesh.add_property_map<vertex_descriptor, Vector>("v:normals", CGAL::NULL_VECTOR).first;
-  auto fnormals = mesh.add_property_map<face_descriptor, Vector>("f:normals", CGAL::NULL_VECTOR).first;
+  auto vnormals = mesh.add_property_map<vertex_descriptor, Vector>("v:normal", CGAL::NULL_VECTOR).first;
+  auto fnormals = mesh.add_property_map<face_descriptor, Vector>("f:normal", CGAL::NULL_VECTOR).first;
 
   PMP::compute_normals(mesh, vnormals, fnormals);
 
diff --git a/Polygon_mesh_processing/examples/Polygon_mesh_processing/extrude.cpp b/Polygon_mesh_processing/examples/Polygon_mesh_processing/extrude.cpp
index aa7c2bd40ea..a6a76cc84cd 100644
--- a/Polygon_mesh_processing/examples/Polygon_mesh_processing/extrude.cpp
+++ b/Polygon_mesh_processing/examples/Polygon_mesh_processing/extrude.cpp
@@ -59,7 +59,7 @@ int main(int argc, char* argv[])
 
   CGAL::IO::read_polygon_mesh(filename, in);
 
-  VNMap vnormals = in.template add_property_map<vertex_descriptor, Vector>("v:normals", CGAL::NULL_VECTOR).first;
+  VNMap vnormals = in.template add_property_map<vertex_descriptor, Vector>("v:normal", CGAL::NULL_VECTOR).first;
 
   CGAL::Polygon_mesh_processing::compute_vertex_normals(in, vnormals);
   Bottom bottom(get(CGAL::vertex_point,out), vnormals, vlen);
diff --git a/Polygon_mesh_processing/test/Polygon_mesh_processing/pmp_compute_normals_test.cpp b/Polygon_mesh_processing/test/Polygon_mesh_processing/pmp_compute_normals_test.cpp
index 88a70ee95c0..e2ceaddcdf6 100644
--- a/Polygon_mesh_processing/test/Polygon_mesh_processing/pmp_compute_normals_test.cpp
+++ b/Polygon_mesh_processing/test/Polygon_mesh_processing/pmp_compute_normals_test.cpp
@@ -145,9 +145,9 @@ void test_SM(const std::string file_name)
   }
 
   typename SM::template Property_map<vertex_descriptor, Vector> vnormals;
-  vnormals = mesh.template add_property_map<vertex_descriptor, Vector>("v:normals", CGAL::NULL_VECTOR).first;
+  vnormals = mesh.template add_property_map<vertex_descriptor, Vector>("v:normal", CGAL::NULL_VECTOR).first;
   typename SM::template Property_map<face_descriptor, Vector> fnormals;
-  fnormals = mesh.template add_property_map<face_descriptor, Vector>("f:normals", CGAL::NULL_VECTOR).first;
+  fnormals = mesh.template add_property_map<face_descriptor, Vector>("f:normal", CGAL::NULL_VECTOR).first;
 
   test<K>(mesh, vnormals, fnormals);
 }