diff --git a/.pylintrc b/.pylintrc
index 8b580d2..e0ea1b2 100644
--- a/.pylintrc
+++ b/.pylintrc
@@ -6,4 +6,3 @@ disable=fixme,
         abstract-method,
         arguments-differ,
         arguments-renamed,
-        attribute-defined-outside-init,
diff --git a/src/sideshow/app.py b/src/sideshow/app.py
index bbe24a6..02363ec 100644
--- a/src/sideshow/app.py
+++ b/src/sideshow/app.py
@@ -49,9 +49,9 @@ class SideshowAppProvider(base.AppProvider):
 
         :returns: Instance of :class:`~sideshow.orders.OrderHandler`.
         """
-        if "order_handler" not in self.__dict__:
+        if "orders" not in self.app.handlers:
             spec = self.config.get(
                 "sideshow.orders.handler_spec", default="sideshow.orders:OrderHandler"
             )
-            self.order_handler = self.app.load_object(spec)(self.config)
-        return self.order_handler
+            self.app.handlers["orders"] = self.app.load_object(spec)(self.config)
+        return self.app.handlers["orders"]