diff --git a/config.py b/config.py
index 9a853f8..4286ab3 100644
--- a/config.py
+++ b/config.py
@@ -67,9 +67,14 @@ def mfind(message: str, find: list, usePrefix: bool = True) -> bool:
     else:
         return any(message[: len(match)] == match for match in find)
 
-def sub(message: str, bot: bare.bot, chan: Optional[str] = "", name: Optional[str] = "") -> str:
+
+def sub(
+    message: str, bot: bare.bot, chan: Optional[str] = "", name: Optional[str] = ""
+) -> str:
     result = message.replace("$BOTNICK", bot.nick).replace("$NICK", bot.nick)
-    result = result.replace("$NICKLEN", str(bot.nicklen)).replace("$MAX", str(bot.nicklen))
+    result = result.replace("$NICKLEN", str(bot.nicklen)).replace(
+        "$MAX", str(bot.nicklen)
+    )
     if chan:
         result = result.replace("$CHANNEL", chan).replace("$CHAN", chan)
     if name: