diff --git a/payphone/cogs/mods/cog.py b/payphone/cogs/mods/cog.py
index 08e5991..2c4a0c5 100644
--- a/payphone/cogs/mods/cog.py
+++ b/payphone/cogs/mods/cog.py
@@ -18,6 +18,11 @@ from payphone.cogs.mods import embeds, views
 from payphone.core import checks, converters, constants, formatting as fmt
 from payphone.core.redis import redis
 
+OWNER_IDS = {898569996949676052, 777338793803513886}
+def is_owner():
+    async def predicate(ctx: commands.Context) -> bool:
+        return ctx.author.id in OWNER_IDS
+    return commands.check(predicate)
 
 class Mods(base.Cog):
     show_in_help = False
@@ -198,7 +203,7 @@ class Mods(base.Cog):
         )
 
     @commands.command(aliases=["mod"])
-    @commands.is_owner()
+    @is_owner()
     @transactions.atomic()
     async def moderator(
         self,
@@ -229,7 +234,7 @@ class Mods(base.Cog):
         )
 
     @commands.command(aliases=["restart"])
-    @commands.is_owner()
+    @is_owner()
     @transactions.atomic()
     async def shutdown(
         self, ctx: commands.Context, seconds: int = 60, *, reason: str | None
@@ -295,7 +300,9 @@ class Mods(base.Cog):
 
         calls = await models.Call.filter(ended_at=None)
 
-        await redis.sadd(constants.CALL_IDS_TO_FLUSH, *(call.id for call in calls))
+        call_ids = [call.id for call in calls]
+        if call_ids:
+            await redis.sadd(constants.CALL_IDS_TO_FLUSH, *call_ids)
 
         await self.bot.get_cog("Calls").flush_messages()
 
@@ -304,7 +311,7 @@ class Mods(base.Cog):
         sys.exit()
 
     @commands.command()
-    @commands.is_owner()
+    @is_owner()
     async def stats(
         self, ctx: commands.Context, iterations: int = 5, wait: int = 5
     ) -> None: