diff --git a/docs/user-guide/configuration.md b/docs/user-guide/configuration.md
index 9749bb4..28bba06 100644
--- a/docs/user-guide/configuration.md
+++ b/docs/user-guide/configuration.md
@@ -49,6 +49,7 @@ pidfile                                | Where to write pidfile (dont write by d
 log                                    | Logs destination: stdout, file (stdout if not set, file - otherwise, for compatibility)
 logfile                                | Path to logfile (default - autodetect)
 loglevel                               | Log messages above this level (debug, info, warn, error)
+logclftime                             | Write full CLF-formatted date and time to log (default: write only time)
 datadir                                | Path to storage of i2pd data (RI, keys, peer profiles, ...)
 host                                   | Router external IP for incoming connections
 port                                   | Port to listen for incoming connections (default: auto)