diff --git a/docs/src/pages/keymap-upgrader.mdx b/docs/src/pages/keymap-upgrader.mdx
index d643ca14..341e31de 100644
--- a/docs/src/pages/keymap-upgrader.mdx
+++ b/docs/src/pages/keymap-upgrader.mdx
@@ -11,6 +11,8 @@ Some behaviors, key codes, and other features have been renamed to be more consi
 
 Paste the contents of a `.keymap` file below. Then, hover your mouse over the upgraded keymap and click the `Copy` button in the upper-right corner to copy it to your clipboard.
 
+Lines that have been modified in the upgraded keymap will be highlighted.
+
 :::warning
 
 The upgrader does not handle key codes inside a `#define` or a behavior creation macro such as `ZMK_MACRO()`, so you will need to update those manually using