diff --git a/hosts/www/caldav-export.py b/hosts/www/caldav-export.py
index 814a54b..8ef1130 100644
--- a/hosts/www/caldav-export.py
+++ b/hosts/www/caldav-export.py
@@ -1,4 +1,5 @@
 import argparse
+import os
 import re
 from pathlib import Path
 
@@ -11,12 +12,7 @@ def safe_filename(name: str) -> str:
     return re.sub(r"[^a-zA-Z0-9._-]+", "_", name)
 
 
-def export_calendar(
-    url: str,
-    username: str,
-    password: str,
-    calendar: str,
-) -> Calendar:
+def export_calendar(url: str, username: str, password: str, calendar: str) -> Calendar:
     client = DAVClient(
         url=url,
         username=username,
@@ -62,45 +58,13 @@ def export_calendar(
 
         cal = Calendar.from_ical(data)
 
-        # Only copy top-level components.
-        #
-        # Do NOT use cal.walk() here. walk() also returns the
-        # STANDARD/DAYLIGHT components inside VTIMEZONE.
-        for component in cal.subcomponents:
-            result.add_component(component)
+        for component in cal.walk():
+            if component.name != "VCALENDAR":
+                result.add_component(component)
 
     return result
 
 
-def add_normalized_components(
-    target: Calendar,
-    source: Calendar,
-    timezones: dict[str, object],
-) -> None:
-    """
-    Add components from source to target while collecting VTIMEZONE
-    components separately.
-
-    Exactly one VTIMEZONE is retained for each TZID.
-    """
-
-    for component in source.subcomponents:
-        if component.name == "VTIMEZONE":
-            tzid = component.get("TZID")
-
-            if tzid is None:
-                print("  warning: ignoring VTIMEZONE without TZID")
-                continue
-
-            tzid = str(tzid)
-
-            if tzid not in timezones:
-                timezones[tzid] = component
-
-        else:
-            target.add_component(component)
-
-
 def main():
     parser = argparse.ArgumentParser()
     parser.add_argument("config")
@@ -117,16 +81,12 @@ def main():
     output_dir = Path(args.output)
     output_dir.mkdir(parents=True, exist_ok=True)
 
-    username = config["username"]
-    password = config["password"]
-
     combined = Calendar()
     combined.add("prodid", "-//Combined calendar//")
     combined.add("version", "2.0")
 
-    # TZID -> VTIMEZONE component
-    timezones = {}
-
+    username = config["username"]
+    password = config["password"]
     for entry in config["calendars"]:
         cal = export_calendar(
             entry["url"],
@@ -137,37 +97,19 @@ def main():
 
         filename = output_dir / f"{safe_filename(entry['calendar'])}.ics"
 
-        # Individual calendar export stays as-is.
         with open(filename, "wb") as f:
             f.write(cal.to_ical())
 
         print(f"  -> {filename}")
 
-        # Normalize components for the combined calendar.
-        add_normalized_components(
-            combined,
-            cal,
-            timezones,
-        )
-
-    # Add each VTIMEZONE exactly once.
-    #
-    # Put them before events/components in the resulting VCALENDAR.
-    normalized = Calendar()
-    normalized.add("prodid", "-//Combined calendar//")
-    normalized.add("version", "2.0")
-
-    for tzid, timezone in timezones.items():
-        print(f"  timezone: {tzid}")
-        normalized.add_component(timezone)
-
-    for component in combined.subcomponents:
-        normalized.add_component(component)
+        for component in cal.walk():
+            if component.name != "VCALENDAR":
+                combined.add_component(component)
 
     combined_file = output_dir / "all.ics"
 
     with open(combined_file, "wb") as f:
-        f.write(normalized.to_ical())
+        f.write(combined.to_ical())
 
     print()
     print(f"Combined export: {combined_file}")