diff --git a/mautrix_telegram/portal/base.py b/mautrix_telegram/portal/base.py
index 6dc32b32..086f25be 100644
--- a/mautrix_telegram/portal/base.py
+++ b/mautrix_telegram/portal/base.py
@@ -136,6 +136,18 @@ class BasePortal(ABC):
             return str(self.tgid)
         return f"{self.tg_receiver}<->{self.tgid}"
 
+    @property
+    def alias(self) -> Optional[RoomAlias]:
+        if not self.username:
+            return None
+        return RoomAlias(f"#{self.alias_localpart}:{self.hs_domain}")
+
+    @property
+    def alias_localpart(self) -> Optional[str]:
+        if not self.username:
+            return None
+        return self.alias_template.format(self.username)
+
     @property
     def peer(self) -> Union[TypePeer, TypeInputPeer]:
         if self.peer_type == "user":
@@ -261,13 +273,17 @@ class BasePortal(ABC):
                 authenticated.append(user)
         return authenticated
 
-    @staticmethod
-    async def cleanup_room(intent: IntentAPI, room_id: RoomID, message: str = "Portal deleted",
-                           puppets_only: bool = False) -> None:
+    async def cleanup_room(self, intent: IntentAPI, room_id: RoomID,
+                           message: str = "Portal deleted", puppets_only: bool = False) -> None:
         try:
             members = await intent.get_room_members(room_id)
         except MatrixRequestError:
             members = []
+        if self.username:
+            try:
+                await intent.remove_room_alias(self.alias_localpart)
+            except (MatrixRequestError, IntentError):
+                self.log.warning("Failed to remove alias when cleaning up room", exc_info=True)
         for user in members:
             puppet = p.Puppet.get_by_mxid(UserID(user), create=False)
             if user != intent.mxid and (not puppets_only or puppet):
@@ -278,7 +294,10 @@ class BasePortal(ABC):
                         await intent.kick_user(room_id, user, message)
                 except (MatrixRequestError, IntentError):
                     pass
-        await intent.leave_room(room_id)
+        try:
+            await intent.leave_room(room_id)
+        except (MatrixRequestError, IntentError):
+            self.log.warning("Failed to leave room when cleaning up room", exc_info=True)
 
     async def unbridge(self) -> None:
         await self.cleanup_room(self.main_intent, self.mxid, "Room unbridged", puppets_only=True)
diff --git a/mautrix_telegram/portal/metadata.py b/mautrix_telegram/portal/metadata.py
index 12e366c0..7c6ef837 100644
--- a/mautrix_telegram/portal/metadata.py
+++ b/mautrix_telegram/portal/metadata.py
@@ -278,8 +278,8 @@ class PortalMetadata(BasePortal, ABC):
 
         if self.peer_type == "channel" and entity.username:
             preset = RoomCreatePreset.PUBLIC
-            alias = self._get_alias_localpart(entity.username)
             self.username = entity.username
+            alias = self.alias_localpart
         else:
             preset = RoomCreatePreset.PRIVATE
             # TODO invite link alias?
@@ -438,18 +438,6 @@ class PortalMetadata(BasePortal, ABC):
         if self._participants_to_power_levels(participants, levels):
             await self.main_intent.set_power_levels(self.mxid, levels)
 
-    @property
-    def alias(self) -> Optional[RoomAlias]:
-        if not self.username:
-            return None
-        return RoomAlias(f"#{self._get_alias_localpart()}:{self.hs_domain}")
-
-    def _get_alias_localpart(self, username: Optional[str] = None) -> Optional[str]:
-        username = username or self.username
-        if not username:
-            return None
-        return self.alias_template.format(username)
-
     def _add_bot_chat(self, bot: User) -> None:
         if self.bot and bot.id == self.bot.tgid:
             self.bot.add_chat(self.tgid, self.peer_type)
@@ -584,11 +572,10 @@ class PortalMetadata(BasePortal, ABC):
             return False
 
         if self.username:
-            await self.main_intent.remove_room_alias(self._get_alias_localpart())
+            await self.main_intent.remove_room_alias(self.alias_localpart)
         self.username = username or None
         if self.username:
-            await self.main_intent.add_room_alias(self.mxid, self._get_alias_localpart(),
-                                                  override=True)
+            await self.main_intent.add_room_alias(self.mxid, self.alias_localpart, override=True)
             if self.public_portals:
                 await self.main_intent.set_join_rule(self.mxid, "public")
         else: