diff --git a/Modules/mmapmodule.c b/Modules/mmapmodule.c
index 35d61ba..cf0b687 100644
--- a/Modules/mmapmodule.c
+++ b/Modules/mmapmodule.c
@@ -700,7 +700,7 @@
 static PyObject *
 mmap__exit__method(PyObject *self, PyObject *args)
 {
-    _Py_identifier(close);
+    _Py_IDENTIFIER(close);
 
     return _PyObject_CallMethodId(self, &PyId_close, NULL);
 }