diff --git a/lib/xos-genx/xos-genx-tests/attics/xosmodel_top.py b/lib/xos-genx/xos-genx-tests/attics/xosmodel_top.py
index 79752d0..e25560a 100644
--- a/lib/xos-genx/xos-genx-tests/attics/xosmodel_top.py
+++ b/lib/xos-genx/xos-genx-tests/attics/xosmodel_top.py
@@ -1,4 +1,3 @@
-
 # Copyright 2017-present Open Networking Foundation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -15,4 +14,4 @@
 
 
 def top():
-    return 'top'
+    return "top"