diff --git a/_media/2019-11-09-e-mail-infrastruktur.md b/_media/2019-11-09-e-mail-infrastruktur.md
index b784bf801f4eb2578cb2b902769ae290f1329a31..f208e5aa927607974be95f428e0d24fdd23e22f7 100644
--- a/_media/2019-11-09-e-mail-infrastruktur.md
+++ b/_media/2019-11-09-e-mail-infrastruktur.md
@@ -2,7 +2,7 @@
 layout: video
 release_date:   2020-01-25 20:00:00 +0200
 recording_date: 2019-11-09 15:00:00 +0200
-duration: "00:45
+duration: "00:45"
 room: AMS3
 title:  "E-Mail Infrastruktur"
 subtitle: "Einen Mailserver ohne legacy IP betreiben"