diff --git a/src/agenda_culturel/views.py b/src/agenda_culturel/views.py
index 630dce1..fb56d95 100644
--- a/src/agenda_culturel/views.py
+++ b/src/agenda_culturel/views.py
@@ -10,7 +10,7 @@ from django.http import QueryDict
 from django import forms
 from django.contrib.postgres.search import SearchQuery, SearchHeadline
 
-from django.http import HttpResponseRedirect, FileResponse
+from django.http import HttpResponseRedirect, HttpResponse
 from django.urls import reverse
 from collections import Counter
 
@@ -606,13 +606,14 @@ def export_event_ical(request, pk):
 
     cal = Event.export_to_ics(events)
 
-    return FileResponse(
-        cal.to_ical().decode("utf-8").replace("\r\n", "\n"),
-        as_attachment=True,
-        filename=event.title + ".ics",
-        content_type="text/calendar",
+    response = HttpResponse(content_type="text/calendar")
+    response.content = cal.to_ical().decode("utf-8").replace("\r\n", "\n")
+    response["Content-Disposition"] = "attachment; filename={0}{1}".format(
+        event.title, ".ics"
     )
 
+    return response
+
 
 class EventFilterAdmin(django_filters.FilterSet):
     status = django_filters.MultipleChoiceFilter(