diff --git a/doc/author_fussbroich.txt b/doc/author_fussbroich.txt
new file mode 100644
index 0000000000..ec6fef6cf1
--- /dev/null
+++ b/doc/author_fussbroich.txt
@@ -0,0 +1 @@
+I place my contributions to t8code under the FreeBSD license. Sandro Elsweijer (sandro.elsweijer@gmail.com)
diff --git a/example/geometry/t8_example_geometries.cxx b/example/geometry/t8_example_geometries.cxx
index 4990cd25ec..0238918385 100644
--- a/example/geometry/t8_example_geometries.cxx
+++ b/example/geometry/t8_example_geometries.cxx
@@ -961,8 +961,9 @@ t8_analytic_geom (int level, t8_example_geom_type geom_type)
     forest = forest_adapt;
   }
 
-  /* Write to vtk */
-  t8_forest_write_vtk (forest, vtuname);
+  /* Write to vtk. We use the extended vtk function to export a curved vtk mesh.
+   * This is only viable if you link to vtk. */
+  t8_forest_write_vtk_ext (forest, vtuname, 1, 1, 1, 1, 0, 1, 0, 0, NULL);
   /* Output */
   t8_global_productionf ("Wrote forest to vtu files %s.*\n", vtuname);
   if (geom_type == T8_GEOM_CIRCLE) {