diff --git a/cogs/players.py b/cogs/players.py
index c4e6396..aa1b735 100644
--- a/cogs/players.py
+++ b/cogs/players.py
@@ -485,7 +485,7 @@ async def _build_refractor_response(
     player_id: int,
     refractor_tier: int,
     refractor_data: dict,
-    team: dict = None,
+    team: Optional[dict] = None,
 ) -> dict:
     """Build response data for a /player refractor_tier request.