diff --git a/ftx/api.py b/ftx/api.py
index fde8586..a3a514b 100644
--- a/ftx/api.py
+++ b/ftx/api.py
@@ -71,14 +71,13 @@ def _process_response(response: Response) -> Any:
     #
     # Authentication required methods
     #
-
     def authentication_required(fn):
         """Annotation for methods that require auth."""
         def wrapped(self, *args, **kwargs):
             if not self._api_key:
                 raise TypeError("You must be authenticated to use this method")
             else:
-                return fn(self=self, *args, **kwargs)
+                return fn(self, *args, **kwargs)
 
         return wrapped
 
@@ -90,6 +89,10 @@ def get_account_info(self) -> dict:
     def get_open_orders(self, market: Optional[str] = None) -> List[dict]:
         return self._get('orders', {'market': market})
 
+    @authentication_required
+    def get_order_status(self, existing_order_id: int) -> dict:
+        return self._get(f'orders/{existing_order_id}')
+
     @authentication_required
     def get_order_history(self,
                           market: Optional[str] = None,