diff --git a/discord/team.py b/discord/team.py
index 94b00a2e5..e59c122c3 100644
--- a/discord/team.py
+++ b/discord/team.py
@@ -75,7 +75,7 @@ class Team:
         """
         return self.icon_url_as()
 
-    def icon_url_as(self, *, format='None', size=1024):
+    def icon_url_as(self, *, format='webp', size=1024):
         """Returns an :class:`Asset` for the icon the team has.
 
         The format must be one of 'webp', 'jpeg', 'jpg' or 'png'.