diff --git a/client/connection.go b/client/connection.go
index 9b4587e..4f2a6b7 100644
--- a/client/connection.go
+++ b/client/connection.go
@@ -473,6 +473,9 @@ func (conn *Conn) write(line string) error {
 	if err := conn.io.Flush(); err != nil {
 		return err
 	}
+	if strings.HasPrefix(line, "PASS") {
+		line = "PASS **************"
+	}
 	logging.Debug("-> %s", line)
 	return nil
 }