1 files changed, 2 insertions, 2 deletions
diff --git a/Objects/genobject.c b/Objects/genobject.c
index c006f1af217..ea3382d3e31 100644
--- a/Objects/genobject.c
+++ b/Objects/genobject.c
@@ -769,7 +769,7 @@ gen_sizeof(PyGenObject *gen, PyObject *Py_UNUSED(ignored))
     Py_ssize_t res;
     res = offsetof(PyGenObject, gi_iframe) + offsetof(_PyInterpreterFrame, localsplus);
     PyCodeObject *code = gen->gi_code;
-    res += (code->co_nlocalsplus+code->co_stacksize) * sizeof(PyObject *);
+    res += _PyFrame_NumSlotsForCodeObject(code) * sizeof(PyObject *);
     return PyLong_FromSsize_t(res);
 }
 
@@ -850,7 +850,7 @@ static PyObject *
 make_gen(PyTypeObject *type, PyFunctionObject *func)
 {
     PyCodeObject *code = (PyCodeObject *)func->func_code;
-    int slots = code->co_nlocalsplus + code->co_stacksize;
+    int slots = _PyFrame_NumSlotsForCodeObject(code);
     PyGenObject *gen = PyObject_GC_NewVar(PyGenObject, type, slots);
     if (gen == NULL) {
         return NULL;