diff --git a/Objects/genobject.c b/Objects/genobject.c
index 8c70b5c..6018e5b 100644
--- a/Objects/genobject.c
+++ b/Objects/genobject.c
@@ -97,7 +97,8 @@
             /* Delay exception instantiation if we can */
             PyErr_SetNone(PyExc_StopIteration);
         } else {
-            PyObject *e = PyStopIteration_Create(result);
+            PyObject *e = PyObject_CallFunctionObjArgs(
+                               PyExc_StopIteration, result, NULL);
             if (e != NULL) {
                 PyErr_SetObject(PyExc_StopIteration, e);
                 Py_DECREF(e);
@@ -339,7 +340,7 @@
             Py_DECREF(ret);
             /* Termination repetition of YIELD_FROM */
             gen->gi_frame->f_lasti++;
-            if (PyGen_FetchStopIterationValue(&val) == 0) {
+            if (_PyGen_FetchStopIterationValue(&val) == 0) {
                 ret = gen_send_ex(gen, val, 0);
                 Py_DECREF(val);
             } else {
@@ -428,7 +429,7 @@
  */
 
 int
-PyGen_FetchStopIterationValue(PyObject **pvalue) {
+_PyGen_FetchStopIterationValue(PyObject **pvalue) {
     PyObject *et, *ev, *tb;
     PyObject *value = NULL;