diff --git a/README.md b/README.md
index a6c3ca2..e808779 100644
--- a/README.md
+++ b/README.md
@@ -131,6 +131,7 @@ All suggestions are welcome, even the smallest ones.
 
 * **[Raving_Kumquat](http://cookieclicker.wikia.com/wiki/User:Raving_Kumquat)**: Original author
 * **[Maxime Fabre](https://github.com/Anahkiasen)**: Previous maintainer
+* **[Alderi Tokori](http://forum.dashnet.org/profile/Alderi)**: ROI calculations (unused now)
 * **[Alhifar](https://github.com/Alhifar)**: Missed Golden Cookie Stat
 * **[BlackenedGem](https://github.com/BlackenedGem)**: Golden/Wrath Cookie Favicons
 * **[Aktanusa](https://github.com/Aktanusa)**: Current maintainer
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