diff --git a/shopping_client/shopping_client.py b/shopping_client/shopping_client.py
index 075700aed33ef1d942584efec99acd3d10f424d3..3b86f7311a05c923a2ca8052362402f1487bc206 100644
--- a/shopping_client/shopping_client.py
+++ b/shopping_client/shopping_client.py
@@ -76,7 +76,7 @@ class shopping_client:
                     "shopping_cart"
                 ]
             else:
-                return None
+                warn(f"Unable to load data from {self.host}; is your key valid?")
 
         if filter_archives:
             self.basket = self._filter_on_archive()