diff --git a/Objects/tupleobject.c b/Objects/tupleobject.c
index d808e08aa14..de43ee4bdf6 100644
--- a/Objects/tupleobject.c
+++ b/Objects/tupleobject.c
@@ -997,7 +997,7 @@ tupleiter_reduce(tupleiterobject *it)
 static PyObject *
 tupleiter_setstate(tupleiterobject *it, PyObject *state)
 {
-    long index = PyLong_AsLong(state);
+    Py_ssize_t index = PyLong_AsLong(state);
     if (index == -1 && PyErr_Occurred())
         return NULL;
     if (it->it_seq != NULL) {