diff --git a/app.py b/app.py
index 1a6cf89..f2235cf 100644
--- a/app.py
+++ b/app.py
@@ -329,6 +329,7 @@ def _ensure_conf_dir():
 def _write_webdav_conf(shares):
     _ensure_conf_dir()
     os.makedirs('/var/lib/apache2/webdav', exist_ok=True)
+    subprocess.run(['chown', 'www-data:www-data', '/var/lib/apache2/webdav'], capture_output=True)
     lines = ['# Managed by MicroNAS — do not edit manually\n\n',
              'DavLockDB /var/lib/apache2/webdav/DavLock\n\n']
     for s in shares: