diff --git a/docs/using.rst b/docs/using.rst
index 6a3c39e54..73c3fe140 100644
--- a/docs/using.rst
+++ b/docs/using.rst
@@ -135,7 +135,7 @@ webroot    Y N Works with already running webserver, by writing necessary files
                to the disk (``--webroot-path`` should be pointed to your
                ``public_html``). Currently, when multiple domains are specified
                (`-d`), they must all use the same web root path.
-manual     Y N Hidden from standard UI, use with ``--a manual``. Requires to
+manual     Y N Hidden from standard UI, use with ``-a manual``. Requires to
                copy and paste commands into a new terminal session. Allows to
                run client on machine different than target webserver, e.g. your
                laptop.