diff --git a/mautrix_telegram/commands/meta.py b/mautrix_telegram/commands/meta.py
index ca66fdd3..1f07d3f1 100644
--- a/mautrix_telegram/commands/meta.py
+++ b/mautrix_telegram/commands/meta.py
@@ -58,7 +58,7 @@ def help(evt):
 **search** [_-r|--remote_] <_query_> - Search your contacts or the Telegram servers for users.  
 **sync** [`chats`|`contacts`|`me`]   - Synchronize your chat portals, contacts and/or own info.  
 **ping-bot**                         - Get info of the message relay Telegram bot.  
-**set-pl** <_level_>                 - Set a temporary power level without affecting Telegram.
+**set-pl** <_level_> [_mxid_]        - Set a temporary power level without affecting Telegram.
 
 #### Initiating chats
 **pm** <_identifier_> - Open a private chat with the given Telegram user. The identifier is either
diff --git a/mautrix_telegram/commands/portal.py b/mautrix_telegram/commands/portal.py
index 1ca17878..aa5850b8 100644
--- a/mautrix_telegram/commands/portal.py
+++ b/mautrix_telegram/commands/portal.py
@@ -28,11 +28,12 @@ async def set_power_level(evt: CommandEvent):
     try:
         level = int(evt.args[0])
     except KeyError:
-        return await evt.reply("**Usage:** `$cmdprefix+sp set-power <level>`")
+        return await evt.reply("**Usage:** `$cmdprefix+sp set-power <level> [mxid]`")
     except ValueError:
         return await evt.reply("The level must be an integer.")
     levels = await evt.az.intent.get_power_levels(evt.room_id)
-    levels["users"][evt.sender.mxid] = level
+    mxid = evt.args[1] if len(evt.args) > 1 else evt.sender.mxid
+    levels["users"][mxid] = level
     try:
         await evt.az.intent.set_power_levels(evt.room_id, levels)
     except MatrixRequestError: