diff --git a/mipac/models/mute.py b/mipac/models/mute.py
index 5599106..5227462 100644
--- a/mipac/models/mute.py
+++ b/mipac/models/mute.py
@@ -1,37 +1,47 @@
 from __future__ import annotations
+from datetime import datetime
 
 from typing import TYPE_CHECKING
 
-from mipac.models.user import MeDetailed, UserDetailedNotMe, packed_user
+from mipac.models.user import UserDetailedNotMe
 from mipac.types.mute import IMuteUser
+from mipac.utils.format import str_to_datetime
 
 if TYPE_CHECKING:
     from mipac.manager.client import ClientManager
 
 
 class MuteUser:
-    def __init__(self, data: IMuteUser, *, client: ClientManager) -> None:
-        self.__data: IMuteUser = data
+    def __init__(self, raw_mute_user: IMuteUser, *, client: ClientManager) -> None:
+        self.__raw_mute_user: IMuteUser = raw_mute_user
         self.__client: ClientManager = client
 
     @property
     def id(self) -> str:
-        return self.__data["id"]
+        return self.__raw_mute_user["id"]
 
     @property
     def created_at(self) -> str:
-        return self.__data["created_at"]
+        return self.__raw_mute_user["created_at"]
+
+    @property
+    def expires_at(self) -> datetime | None:
+        return (
+            str_to_datetime(self.__raw_mute_user["expires_at"])
+            if self.__raw_mute_user["expires_at"]
+            else None
+        )
 
     @property
     def mutee_id(self) -> str:
-        return self.__data["mutee_id"]
+        return self.__raw_mute_user["mutee_id"]
 
     @property
-    def mutee(self) -> UserDetailedNotMe | MeDetailed:
-        return packed_user(self.__data["mutee"], client=self.__client)
+    def mutee(self) -> UserDetailedNotMe:
+        return UserDetailedNotMe(self.__raw_mute_user["mutee"], client=self.__client)
 
     def __eq__(self, __value: MuteUser) -> bool:
-        return isinstance(__value, IMuteUser) and self.id == __value.id
+        return isinstance(__value, MuteUser) and self.id == __value.id
 
     def __ne__(self, __value: MuteUser) -> bool:
         return not self.__eq__(__value)
diff --git a/mipac/types/mute.py b/mipac/types/mute.py
index 357eb76..c5e0907 100644
--- a/mipac/types/mute.py
+++ b/mipac/types/mute.py
@@ -9,5 +9,6 @@ if TYPE_CHECKING:
 class IMuteUser(TypedDict):
     id: str
     created_at: str
+    expires_at: str | None
     mutee_id: str
     mutee: IUserDetailed