diff --git a/Objects/fileobject.c b/Objects/fileobject.c
index 61c9428..3ec5a00 100644
--- a/Objects/fileobject.c
+++ b/Objects/fileobject.c
@@ -38,9 +38,9 @@
     io = PyImport_ImportModule("_io");
     if (io == NULL)
         return NULL;
-    stream = _PyObject_CallMethodId(io, &PyId_open, "isisssi", fd, mode,
+    stream = _PyObject_CallMethodId(io, &PyId_open, "isisssO", fd, mode,
                                  buffering, encoding, errors,
-                                 newline, closefd);
+                                 newline, closefd ? Py_True : Py_False);
     Py_DECREF(io);
     if (stream == NULL)
         return NULL;