diff --git a/Objects/bytearrayobject.c b/Objects/bytearrayobject.c
index 1bb19a9..9dd6712 100644
--- a/Objects/bytearrayobject.c
+++ b/Objects/bytearrayobject.c
@@ -89,8 +89,7 @@
 PyObject *
 PyByteArray_FromObject(PyObject *input)
 {
-    return PyObject_CallFunctionObjArgs((PyObject *)&PyByteArray_Type,
-                                        input, NULL);
+    return _PyObject_CallOneArg((PyObject *)&PyByteArray_Type, input);
 }
 
 static PyObject *
@@ -2018,8 +2017,7 @@
 {
     PyObject *result = _PyBytes_FromHex(string, type == &PyByteArray_Type);
     if (type != &PyByteArray_Type && result != NULL) {
-        Py_SETREF(result, PyObject_CallFunctionObjArgs((PyObject *)type,
-                                                       result, NULL));
+        Py_SETREF(result, _PyObject_CallOneArg((PyObject *)type, result));
     }
     return result;
 }