diff --git a/tests/metagpt/roles/mock.py b/tests/metagpt/roles/mock.py
index 1bf20e9b7..1b02fbaa5 100644
--- a/tests/metagpt/roles/mock.py
+++ b/tests/metagpt/roles/mock.py
@@ -4,8 +4,6 @@
 @Time    : 2023/5/12 13:05
 @Author  : alexanderwu
 @File    : mock.py
-@Modified By: mashenquan, 2023-11-1. According to Chapter 2.2.1 and 2.2.2 of RFC 116, change the data type of
-        the `cause_by` value in the `Message` to a string to support the new message distribution feature.
 """
 from metagpt.actions import BossRequirement, WriteDesign, WritePRD, WriteTasks
 from metagpt.schema import Message