diff --git a/libsrc/geom2d/geometry2d.hpp b/libsrc/geom2d/geometry2d.hpp
index 2aee6ccc..52e7a20e 100644
--- a/libsrc/geom2d/geometry2d.hpp
+++ b/libsrc/geom2d/geometry2d.hpp
@@ -128,7 +128,7 @@ namespace netgen
 
 
 
-  class SplineGeometry2d : public NetgenGeometry, public SplineGeometry<2>
+  class SplineGeometry2d : public SplineGeometry<2>, public NetgenGeometry
   {
   protected:
     Array<char*> materials;
diff --git a/libsrc/geom2d/python_geom2d.cpp b/libsrc/geom2d/python_geom2d.cpp
index 1fc34f99..dc1add41 100644
--- a/libsrc/geom2d/python_geom2d.cpp
+++ b/libsrc/geom2d/python_geom2d.cpp
@@ -17,7 +17,8 @@ DLL_HEADER void ExportGeom2d(py::module &m)
 {
   py::class_<SplineGeometry2d, NetgenGeometry, shared_ptr<SplineGeometry2d>>
     (m, "SplineGeometry",
-     "a 2d boundary representation geometry model by lines and splines")
+     "a 2d boundary representation geometry model by lines and splines",
+     py::multiple_inheritance())
     .def(py::init<>())
     .def(py::init([](const string& filename)
                   {