descriptions are not sumaries in ics

events.ics

@@ -10,7 +10,8 @@ METHOD:PUBLISH
 UID:{{ event.uid }}
 ORGANIZER;CN="Chaotikum e.V.":MAILTO:{{event.contact}}
 LOCATION:Chaotikum{% capture textSize %}{{ event.short | size }}{% endcapture %}{% assign linelength = 60 %}{% assign rounds = textSize | divided_by: linelength %}{% assign extra = textSize | modulo: linelength %}{% assign start = 0 %}
-SUMMARY:{% for i in (1..rounds) %}{{ event.short | slice: start, linelength }}{% assign start = start | plus: linelength %}
+SUMMARY:{{ event.title | xml_escape }}
+DESCRIPTION:{% for i in (1..rounds) %}{{ event.short | slice: start, linelength }}{% assign start = start | plus: linelength %}
     {% endfor%}{{ event.short | slice: start, extra }}
 CLASS:PUBLIC
 DTSTART:{{ event.eventdate | date: "%Y%m%d" }}T{{ event.eventdate | date: "%H%M%S" }}Z