diff --git a/Lib/python/pyrun.swg b/Lib/python/pyrun.swg
index b077fad32..53fc3a75b 100644
--- a/Lib/python/pyrun.swg
+++ b/Lib/python/pyrun.swg
@@ -1310,7 +1310,7 @@ SWIG_Python_NewShadowInstance(SwigPyClientData *data, PyObject *swig_this)
     }
   } else {
 #if PY_VERSION_HEX >= 0x03000000
-    inst = PyBaseObject_Type.tp_new((PyTypeObject*) data->newargs, Py_None, Py_None);
+    inst = ((PyTypeObject*) data->newargs)->tp_new((PyTypeObject*) data->newargs, Py_None, Py_None);
     if (inst) {
       PyObject_SetAttr(inst, SWIG_This(), swig_this);
       Py_TYPE(inst)->tp_flags &= ~Py_TPFLAGS_VALID_VERSION_TAG;