diff --git a/application/Calendar/CalendarModel.php b/application/Calendar/CalendarModel.php
index f88dd22db..32bf0e89a 100644
--- a/application/Calendar/CalendarModel.php
+++ b/application/Calendar/CalendarModel.php
@@ -47,6 +47,7 @@ class CalendarModel
         3 => 'Grüne Kategorie', //ESTMK IBN
         4 => 'Lila Kategorie',        //Snopp IBN
         5 => 'Rote Kategorie',    //Störung
+        6 => 'Rote Kategorie',    //Störung
         98 => 'Gru00fcne Kategorie',    //ESTMK IBN
         99 => 'Gr\u00fcne Kategorie',   //ESTMK IBN
     );