diff --git a/Usage.md b/Usage.md
index d5325a0..056b744 100644
--- a/Usage.md
+++ b/Usage.md
@@ -175,6 +175,7 @@ optional args:
  -S      persistent session
  -t secs timeout to lock
  -T key  sort order [a/d/e/r/s/t/v]
+ -u      use selection (no prompt)
  -U      show user and group
  -V      show version
  -w      place HW cursor on hovered