diff --git a/lib/server/user.ml b/lib/server/user.ml
index 44a458a..32d327d 100644
--- a/lib/server/user.ml
+++ b/lib/server/user.ml
@@ -26,7 +26,7 @@ let set_nick t new_nick =
 
 let register t ~router = Hashtbl.add router.users t.nick_key t
 let unregister t ~router = Hashtbl.remove router.users t.nick_key
-let is_registered t ~router = Hashtbl.mem router.channels t.nick_key
+let is_registered t ~router = Hashtbl.mem router.users t.nick_key
 
 let prefix t =
   Irc.Msg.User_prefix (t.nick, Some t.userinfo)