diff --git a/src/www/bongo_web/calendar_store.py b/src/www/bongo_web/calendar_store.py
index 48f3282..023622a 100644
--- a/src/www/bongo_web/calendar_store.py
+++ b/src/www/bongo_web/calendar_store.py
@@ -425,7 +425,7 @@ def list_calendar_events(user, store_cookie, calendar_name,
         for item in events:
             document = client.Read(item.uid)
             payload = to_ical(document.strip())
-            filename = item.filename
+            filename = item.filename.rstrip("/").rsplit("/", 1)[-1]
             if not filename.endswith(".ics"):
                 filename += ".ics"
             if not EVENT_NAME.fullmatch(filename):
diff --git a/src/www/tests/test_calendar_store.py b/src/www/tests/test_calendar_store.py
index 7d732d2..6bfe6c4 100644
--- a/src/www/tests/test_calendar_store.py
+++ b/src/www/tests/test_calendar_store.py
@@ -194,7 +194,7 @@ class CalendarMutationTests(unittest.TestCase):
         store = FakeStore({"event-guid": "stored-json"})
         calendar = type("Calendar", (), {"uid": "calendar-guid"})()
         event = type("Event", (), {
-            "uid": "event-guid", "filename": "event-name"})()
+            "uid": "event-guid", "filename": "/events/event-name"})()
         store.Info = lambda path: calendar
         store.events = [event]
         self.assertEqual(list_calendar_events(