diff --git a/docs/devices.md b/docs/devices.md
index c13fde5a..02ad3965 100644
--- a/docs/devices.md
+++ b/docs/devices.md
@@ -89,7 +89,7 @@ Mice (Unifying):
 | T620 Touch       | 2.0   | yes     |       |                                 |
 | Performance MX   | 1.0   | yes     | R/W   | smooth scrolling                |
 | Anywhere MX      | 1.0   | yes     | R/W   | smooth scrolling                |
-| MX Master        | 4.5   | yes     | TODO  |                                 |
+| MX Master        | 4.5   | yes     | R/W   | smart shift                     |
 | Cube             | 2.0   | yes     |       |                                 |