diff --git a/hosts/www/caldav-export.py b/hosts/www/caldav-export.py
index 4ab0eaa..bb8f445 100644
--- a/hosts/www/caldav-export.py
+++ b/hosts/www/caldav-export.py
@@ -8,11 +8,11 @@ from caldav import DAVClient
 from icalendar import Calendar
 
 
-def safe_filename(name):
+def safe_filename(name: str) -> str:
     return re.sub(r"[^a-zA-Z0-9._-]+", "_", name)
 
 
-def export_calendar(url, username, password, output):
+def export_calendar(url: str, username: str, password: str, calendar: str) -> Calendar:
     client = DAVClient(
         url=url,
         username=username,
@@ -25,19 +25,19 @@ def export_calendar(url, username, password, output):
 
     target = None
     for cal in calendars:
-        if cal.name == output["calendar"]:
+        if cal.name == calendar:
             target = cal
             break
 
     if target is None:
         raise RuntimeError(
-            f"Calendar '{output['calendar']}' not found for {username}"
+            f"Calendar '{calendar}' not found for {username}"
         )
 
     print(f"Exporting {username}/{target.name}")
 
     result = Calendar()
-    result.add("prodid", "-//CalDAV Export//")
+    result.add("prodid", f"-//{calendar} calendar export//")
     result.add("version", "2.0")
 
     objects = target.objects()
@@ -71,7 +71,7 @@ def main():
     output_dir.mkdir(parents=True, exist_ok=True)
 
     combined = Calendar()
-    combined.add("prodid", "-//CalDAV Export Combined//")
+    combined.add("prodid", "-//Combined calendar//")
     combined.add("version", "2.0")
 
     for entry in config["calendars"]:
@@ -82,7 +82,7 @@ def main():
             entry["url"],
             username,
             password,
-            entry,
+            entry["calendar"],
         )
 
         filename = output_dir / f"{safe_filename(entry['calendar'])}.ics"
diff --git a/secrets/caldav-export-config.age b/secrets/caldav-export-config.age
index d3442aa..110a967 100644
Binary files a/secrets/caldav-export-config.age and b/secrets/caldav-export-config.age differ