diff --git a/mmt-mode.el b/mmt-mode.el
index 1ddf77e665de70e45b060cf7bae2533c21ca3135..d3716b0bfde7821c503627e6d19800c3728b1ac3 100644
--- a/mmt-mode.el
+++ b/mmt-mode.el
@@ -4,7 +4,7 @@
 ;; Copyright (C) 2022, 2023 Florian Guthmann
 
 ;; Author: Philip Kaludercic <philipk@posteo.net>
-;; Maintainer: Florian Guthmann <florian.guthmann@fau.DE>
+;; Maintainer: Florian Guthmann <florian.guthmann@fau.de>
 ;; Version: 1.0-pre
 ;; URL: https://gitlab.cs.fau.de/oc45ujef/mmt-mode
 ;; Package-Requires: ((emacs "25.1") (eglot "1.0") (jsonrpc "1.0") (project "0.5"))