diff --git a/Objects/bytesobject.c b/Objects/bytesobject.c
index eb11940..680a769 100644
--- a/Objects/bytesobject.c
+++ b/Objects/bytesobject.c
@@ -2807,7 +2807,7 @@
 static PyObject *
 bytes_getnewargs(PyBytesObject *v)
 {
-	return Py_BuildValue("(s#)", v->ob_sval, Py_SIZE(v));
+	return Py_BuildValue("(y#)", v->ob_sval, Py_SIZE(v));
 }