diff --git a/libsrc/occ/python_occ_basic.cpp b/libsrc/occ/python_occ_basic.cpp
index cff6131f..bf5cd64e 100644
--- a/libsrc/occ/python_occ_basic.cpp
+++ b/libsrc/occ/python_occ_basic.cpp
@@ -167,12 +167,9 @@ DLL_HEADER void ExportNgOCCBasic(py::module &m)
 
 
   py::class_<gp_Pnt2d>(m, "gp_Pnt2d", "2d OCC point")
-    .def(py::init([] (py::tuple pnt)
+    .def(py::init([] (std::tuple<double,double> pnt)
                   {
-                    if (py::len(pnt) != 2)
-                      throw std::invalid_argument("need 2-tuple to create gp_Pnt2d");
-                    return gp_Pnt2d(py::cast<double>(pnt[0]),
-                                    py::cast<double>(pnt[1]));
+                    return gp_Pnt2d(get<0>(pnt), get<1>(pnt));
                   }))
     .def(py::init([] (double x, double y) {
           return gp_Pnt2d(x, y);