diff --git a/tests/pytest/alter/alter_replica.py b/tests/pytest/alter/alter_replica.py
index 153940a6f5..6cf0f65825 100644
--- a/tests/pytest/alter/alter_replica.py
+++ b/tests/pytest/alter/alter_replica.py
@@ -6,7 +6,7 @@
 #  No part of this file may be reproduced, stored, transmitted,
 #  disclosed or used in any form or by any means other than as
 #  expressly provided by the written permission from Jianhui Tao
-#  
+#
 ###################################################################
 
 # -*- coding: utf-8 -*-