diff --git a/Command-Line-Interface.md b/Command-Line-Interface.md
index bed48ca..6f9a1c6 100644
--- a/Command-Line-Interface.md
+++ b/Command-Line-Interface.md
@@ -14,6 +14,7 @@ Currently several options are supported, which are useful for running multiple i
 `-l` Allows loading covers from localhost and local network\
 `-d` Dry run of updater to check file permissions in advance, exists Calibre-Web afterwards\
 `-r` Enable public database reconnect route under `/reconnect`
+`-o` Allows to specify path and name Calibre-Web logfile
 
 Starting Calibre-Web with `-k "" -c ""`, deactivates the ssl-server, it falls back to non-ssl, so you can change the ssl settings.