diff --git a/discord/ext/commands/converter.py b/discord/ext/commands/converter.py
index e9a2ea758..2d68ea8bd 100644
--- a/discord/ext/commands/converter.py
+++ b/discord/ext/commands/converter.py
@@ -344,7 +344,7 @@ class PartialMessageConverter(Converter[discord.PartialMessage]):
         if not match:
             raise MessageNotFound(argument)
         data = match.groupdict()
-        channel_id = discord.utils._get_as_snowflake(data, 'channel_id')
+        channel_id = discord.utils._get_as_snowflake(data, 'channel_id') or ctx.channel.id
         message_id = int(data['message_id'])
         guild_id = data.get('guild_id')
         if guild_id is None: