diff --git a/pages/common/hx.md b/pages/common/hx.md
index 3e018d7d0c..68513166c9 100644
--- a/pages/common/hx.md
+++ b/pages/common/hx.md
@@ -28,9 +28,9 @@
 
 `<:>q!<Enter>`
 
-- Undo the last operation:
+- Undo/Redo the last operation:
 
-`<u>`
+`{{<u>|<U>}}`
 
 - Search for a pattern in the file (press `<n>`/`<N>` to go to next/previous match):