diff --git a/common.py b/common.py
index 068dbf9..98b2a36 100644
--- a/common.py
+++ b/common.py
@@ -7,9 +7,8 @@ try:
     asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
 except ImportError:
     uvloop = None
-
 BOT_TOKEN = os.getenv("BOT_TOKEN")
-ADMIN = [int(i) for i in os.getenv("BOT_ADMIN").split(",")]
+ADMIN = [int(i) for i in os.getenv("BOT_ADMIN", "").split(",") if i]
 
 PIXIV_REFRESH_TOKEN = os.getenv("PIXIV_REFRESH_TOKEN")
 
diff --git a/main.py b/main.py
index 7c39edd..3521f4a 100644
--- a/main.py
+++ b/main.py
@@ -246,7 +246,8 @@ async def post_init(application: Application) -> None:
 
 
 async def post_stop(application: Application) -> None:
-    await application.bot.send_message(common.ADMIN[0], "Shutting down...")
+    if common.ADMIN:
+        await application.bot.send_message(common.ADMIN[0], "Shutting down...")
 
 
 async def post_shutdown(application: Application) -> None: