diff --git a/NEMbox/api.py b/NEMbox/api.py
index 2b9bf9f3..4fb29652 100644
--- a/NEMbox/api.py
+++ b/NEMbox/api.py
@@ -344,7 +344,7 @@ def make_cookie(self, name, value):
             discard=False,
             comment=None,
             comment_url=None,
-            rest=None,
+            rest={},
         )
 
     def request(self, method, path, params={}, default={"code": -1}, custom_cookies={'os':'pc'}):