#1535: rename __builtin__ module to builtins.
diff --git a/Objects/listobject.c b/Objects/listobject.c
index ea10abf..01ada08 100644
--- a/Objects/listobject.c
+++ b/Objects/listobject.c
@@ -1961,7 +1961,7 @@
 	module = PyUnicode_AsString(f->m_module);
 	if (module == NULL)
 		return 0;
-	if (strcmp(module, "__builtin__") != 0)
+	if (strcmp(module, "builtins") != 0)
 		return 0;
 	if (strcmp(f->m_ml->ml_name, "cmp") != 0)
 		return 0;