diff --git a/massive/rest/reference.py b/massive/rest/reference.py
index 69a29479..9ec0a00b 100644
--- a/massive/rest/reference.py
+++ b/massive/rest/reference.py
@@ -96,8 +96,8 @@ def list_tickers(
         active: Optional[bool] = None,
         search: Optional[str] = None,
         limit: Optional[int] = 10,
-        sort: Optional[Union[str, Sort]] = "ticker",
-        order: Optional[Union[str, Order]] = "asc",
+        sort: Optional[Union[str, Sort]] = None,
+        order: Optional[Union[str, Order]] = None,
         params: Optional[Dict[str, Any]] = None,
         raw: bool = False,
         options: Optional[RequestOptionBuilder] = None,