diff --git a/Objects/fileobject.c b/Objects/fileobject.c
index 3791241..a21e490 100644
--- a/Objects/fileobject.c
+++ b/Objects/fileobject.c
@@ -136,7 +136,7 @@
         Py_DECREF(writer);
         return -1;
     }
-    result = PyObject_CallFunctionObjArgs(writer, value, NULL);
+    result = _PyObject_CallOneArg(writer, value);
     Py_DECREF(value);
     Py_DECREF(writer);
     if (result == NULL)