diff --git a/tools/irc.py b/tools/irc.py
index c9c1a3f..a0e30a6 100644
--- a/tools/irc.py
+++ b/tools/irc.py
@@ -169,8 +169,14 @@ class User:
 
     def __init__(self, user: str):
         self.user = user
-        user, self.hostname = self.user.split("@")
-        self.nickname, self.username = user.split("!")
+        if "@" not in self.user:
+            self.nickname = self.hostname = self.user
+        else:
+            user, self.hostname = self.user.split("@")
+            if "!" in user:
+                self.nickname, self.username = user.split("!")
+            else:
+                self.nickname = self.username = user
 
     def nick(self, new_nick: str):
         self.user.replace("%s!" % self.nickname, "%s!" % new_nick)