diff --git a/backend/service/ical/icalFileGeneration.go b/backend/service/ical/icalFileGeneration.go
index 833b44d..cee12d2 100644
--- a/backend/service/ical/icalFileGeneration.go
+++ b/backend/service/ical/icalFileGeneration.go
@@ -29,7 +29,6 @@ func (icalModel IcalModel) EmitICal() goics.Componenter {
 	c.AddProperty("TZID", "EUROPE/BERLIN")
 	c.AddProperty("X-WR-CALNAME", "HTWK Kalender")
 	c.AddProperty("X-WR-TIMEZONE", "EUROPE/BERLIN")
-	c.AddProperty("X-LIC-LOCATION", "EUROPE/BERLIN")
 	//add v time zone
 	icalModel.vtimezone(c)
 
@@ -64,7 +63,6 @@ func (icalModel IcalModel) vtimezone(c *goics.Component) {
 	tz := goics.NewComponent()
 	tz.SetType("VTIMEZONE")
 	tz.AddProperty("TZID", "EUROPE/BERLIN")
-	tz.AddProperty("X-LIC-LOCATION", "EUROPE/BERLIN")
 	//add standard time
 	icalModel.standard(tz)
 	//add daylight time
@@ -77,8 +75,7 @@ func (icalModel IcalModel) standard(tz *goics.Component) {
 	st := NewHtwkalenderComponent()
 	st.SetType("STANDARD")
 	st.AddProperty("DTSTART", "19701025T030000")
-	st.AddProperty("RRULE", "FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU")
-
+	st.AddProperty("RRULE", "FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU")
 	st.AddProperty("TZOFFSETFROM", "+0200")
 	st.AddProperty("TZOFFSETTO", "+0100")
 	st.AddProperty("TZNAME", "CET")