diff --git a/metagpt/roles/di/role_zero.py b/metagpt/roles/di/role_zero.py
index 378e9db2c..94b21a76f 100644
--- a/metagpt/roles/di/role_zero.py
+++ b/metagpt/roles/di/role_zero.py
@@ -144,7 +144,8 @@ class RoleZero(Role):
                     "goto_line",
                     "insert_content_at_line",
                     "open_file",
-                    "read" "scroll_down",
+                    "read",
+                    "scroll_down",
                     "scroll_up",
                     "search_dir",
                     "search_file",
diff --git a/metagpt/tools/libs/linter.py b/metagpt/tools/libs/linter.py
index 9f3ab7fd0..c8760a53b 100644
--- a/metagpt/tools/libs/linter.py
+++ b/metagpt/tools/libs/linter.py
@@ -1,3 +1,8 @@
+"""
+This file is borrowed from OpenDevin
+You can find the original repository here:
+https://github.com/All-Hands-AI/OpenHands/blob/main/openhands/runtime/plugins/agent_skills/utils/aider/linter.py
+"""
 import os
 import subprocess
 import sys