diff --git a/matrix_webhook/app.py b/matrix_webhook/app.py
index de7e7ce..f910f53 100644
--- a/matrix_webhook/app.py
+++ b/matrix_webhook/app.py
@@ -2,8 +2,8 @@
 
 import asyncio
 import logging
-import os
 from signal import SIGINT, SIGTERM
+from pathlib import Path
 
 from aiohttp import web
 
@@ -35,7 +35,7 @@ async def main(event):
     await site.start()
 
     if conf.SERVER_PATH:
-        os.chmod(conf.SERVER_PATH, 0o774)
+        Path.chmod(conf.SERVER_PATH, 0o664)
 
     # Run until we get a shutdown request
     await event.wait()
diff --git a/matrix_webhook/conf.py b/matrix_webhook/conf.py
index 89aed46..88c3d1a 100644
--- a/matrix_webhook/conf.py
+++ b/matrix_webhook/conf.py
@@ -10,10 +10,10 @@ parser.add_argument(
     help="host to listen to. Default: `''`. Environment variable: `HOST`",
 )
 parser.add_argument(
-    "-U",
-    "--path",
-    default=os.environ.get("PATH", ""),
-    help="unix path to listen to. Default: `''`. Environment variable: `PATH`",
+    "-S",
+    "--server-path",
+    default=os.environ.get("SERVER_PATH", ""),
+    help="unix path to listen to. Default: `''`. Environment variable: `SERVER_PATH`",
 )
 parser.add_argument(
     "-P",