diff --git a/doc/advanced/config-cheat-sheet.en-us.md b/doc/advanced/config-cheat-sheet.en-us.md
index d8a3b897..a3999595 100644
--- a/doc/advanced/config-cheat-sheet.en-us.md
+++ b/doc/advanced/config-cheat-sheet.en-us.md
@@ -265,6 +265,7 @@ The following configuration set `Content-Type: application/vnd.android.package-a
 - `DISABLE_SSH`: **false**: Disable SSH feature when it's not available.
 - `START_SSH_SERVER`: **false**: When enabled, use the built-in SSH server.
 - `BUILTIN_SSH_SERVER_USER`: **%(RUN_USER)s**: Username to use for the built-in SSH Server.
+- `SSH_USER`: **%(BUILTIN_SSH_SERVER_USER)**: SSH username displayed in clone URLs. This is only for people who configure the SSH server themselves; in most cases, you want to leave this blank and modify the `BUILTIN_SSH_SERVER_USER`.
 - `SSH_DOMAIN`: **%(DOMAIN)s**: Domain name of this server, used for displayed clone URL.
 - `SSH_PORT`: **22**: SSH port displayed in clone URL.
 - `SSH_LISTEN_HOST`: **0.0.0.0**: Listen address for the built-in SSH server.