diff --git a/README.md b/README.md
index ab62c9af..9a9bc950 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,6 @@
[](https://lgtm.com/projects/g/AtsushiSakai/PythonRobotics/context:python)
[](https://www.codefactor.io/repository/github/atsushisakai/pythonrobotics/overview/master)
[](https://github.com/AtsushiSakai/PythonRobotics)
-[](https://saythanks.io/to/AtsushiSakai)
Python codes for robotics algorithm.
diff --git a/users_comments.md b/users_comments.md
index 44e9355e..43ffc7cc 100644
--- a/users_comments.md
+++ b/users_comments.md
@@ -40,8 +40,6 @@ This is a list of related projects.
# Individual users comments
-These are comments from user's using [](https://saythanks.io/to/AtsushiSakai)
-
---
Dear AtsushiSakai,
thank you for building this cool repo for robotics.
I am still learning robotics and this will give me a good starting point.
I hope this note gets to you.