diff --git a/TESTED.md b/TESTED.md
index 4871396..6c97540 100644
--- a/TESTED.md
+++ b/TESTED.md
@@ -11,6 +11,7 @@ This is not by any means an exhaustive list. Many more devices are supported but
 | MX Anywhere 3  |     Yes     |            `MX Anywhere 3`             |
 |  MX Vertical   |     Yes     | `MX Vertical Advanced Ergonomic Mouse` |
 |    MX Ergo     |     Yes     |   `MX Ergo Multi-Device Trackball `    |
+|  MX Ergo M575  |     Yes     |   `ERGO M575 Trackball`                |
 |      M720      |     Yes     |  `M720 Triathlon Multi-Device Mouse`   |
 |      M590      |     Yes     |     `M585/M590 Multi-Device Mouse`     |
 |      T400      |     Yes     |        `Zone Touch Mouse T400`         |