diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index e4f6f6516..639dd863c 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -709,6 +709,8 @@ When you feel confident about your changes, submit a new Pull Request so your co
 
 If you are more comfortable about using Git GUI-based tools, you can refer to [this guide](https://learntodroid.com/how-to-use-git-and-github-in-android-studio/) about the Git integration inside Android Studio, specifically the "How to Contribute to an to Existing Git Repository in Android Studio" section of the guide.
 
+Make sure you have generated the extension icon using the linked Icon Generator tool in the [Tools](#tools) section. The icon must follow the pattern adopted by all other extensions: a square with rounded corners.
+
 Please **do test your changes by compiling it through Android Studio** before submitting it. Also make sure to follow the PR checklist available in the PR body field when creating a new PR. As a reference, you can find it below.
 
 ### Pull Request checklist