Fixed a small omission in the renaming of "unicode" to "str".
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 388734e..dab4000 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -9062,7 +9062,7 @@
 
 	if (type != &PyUnicode_Type)
 		return unicode_subtype_new(type, args, kwds);
-	if (!PyArg_ParseTupleAndKeywords(args, kwds, "|Oss:unicode",
+	if (!PyArg_ParseTupleAndKeywords(args, kwds, "|Oss:str",
 					  kwlist, &x, &encoding, &errors))
 	    return NULL;
 	if (x == NULL)