diff --git a/src/hhu/handler.go b/src/hhu/handler.go
index a6671bd..e49bcbf 100644
--- a/src/hhu/handler.go
+++ b/src/hhu/handler.go
@@ -8,6 +8,11 @@ import (
 
 
 func Handler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-type", "text/calendar")
+	w.Header().Set("charset", "utf-8")
+	w.Header().Set("Content-Disposition", "inline")
+	w.Header().Set("filename", "calendar.ics")
+
 	events, err := GetHhuComputerScienceEvent()
 	if err != nil {
 		w.WriteHeader(http.StatusInternalServerError)
@@ -15,11 +20,6 @@ func Handler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	w.WriteHeader(http.StatusOK)
-	header := w.Header()
-	header.Set("Content-type", "text/calendar")
-	header.Set("charset", "utf-8")
-	header.Set("Content-Disposition", "inline")
-	header.Set("filename", "calendar.ics")
 	enc := goics.NewICalEncode(w)
 	enc.Encode(events)
 }