1 files changed, 1 insertions, 0 deletions

diff --git a/include/usage.h b/include/usage.h
index 42d8b9bcd..9b9a56f95 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -3814,6 +3814,7 @@
      "\n        -t              Read additional recipients from message body" \
      "\n        -f sender       Sender (required)" \
      "\n        -o options      Various options. -oi implied, others are ignored" \
+     "\n        -i              -oi synonym. implied and ignored" \
      "\n" \
      "\nBusybox specific options:" \
      "\n        -w seconds      Network timeout" \