diff --git a/apps/hub-server/modules/mail.ts b/apps/hub-server/modules/mail.ts
index af242778..1198acd7 100644
--- a/apps/hub-server/modules/mail.ts
+++ b/apps/hub-server/modules/mail.ts
@@ -46,7 +46,7 @@ export const sendCourseCompletedEmail = async (
 		{
 			from: process.env.MAIL_USER,
 			to,
-			subject: `Congratulations ${user.firstname} on completing ${event.name}`,
+			subject: `Kurs ${event.name} erfolgreich abgeschlossen`,
 			html: emailHtml,
 		},
 		(error, info) => {