diff --git a/discord/abc.py b/discord/abc.py
index c3fd08924..9d3d38b8c 100644
--- a/discord/abc.py
+++ b/discord/abc.py
@@ -117,7 +117,7 @@ async def _purge_helper(
     before: Optional[SnowflakeTime] = None,
     after: Optional[SnowflakeTime] = None,
     around: Optional[SnowflakeTime] = None,
-    oldest_first: Optional[bool] = False,
+    oldest_first: Optional[bool] = None,
     reason: Optional[str] = None,
 ) -> List[Message]:
     if check is MISSING:
diff --git a/discord/channel.py b/discord/channel.py
index 3f0880f27..065d927b0 100644
--- a/discord/channel.py
+++ b/discord/channel.py
@@ -425,7 +425,7 @@ class TextChannel(discord.abc.Messageable, discord.abc.GuildChannel, Hashable):
         before: Optional[SnowflakeTime] = None,
         after: Optional[SnowflakeTime] = None,
         around: Optional[SnowflakeTime] = None,
-        oldest_first: Optional[bool] = False,
+        oldest_first: Optional[bool] = None,
         reason: Optional[str] = None,
     ) -> List[Message]:
         """|coro|
@@ -1119,7 +1119,7 @@ class VoiceChannel(discord.abc.Messageable, VocalGuildChannel):
         before: Optional[SnowflakeTime] = None,
         after: Optional[SnowflakeTime] = None,
         around: Optional[SnowflakeTime] = None,
-        oldest_first: Optional[bool] = False,
+        oldest_first: Optional[bool] = None,
         reason: Optional[str] = None,
     ) -> List[Message]:
         """|coro|
diff --git a/discord/threads.py b/discord/threads.py
index 60de8915d..e4f34bbbc 100644
--- a/discord/threads.py
+++ b/discord/threads.py
@@ -444,7 +444,7 @@ class Thread(Messageable, Hashable):
         before: Optional[SnowflakeTime] = None,
         after: Optional[SnowflakeTime] = None,
         around: Optional[SnowflakeTime] = None,
-        oldest_first: Optional[bool] = False,
+        oldest_first: Optional[bool] = None,
         reason: Optional[str] = None,
     ) -> List[Message]:
         """|coro|