diff --git a/src/Resources/config/routing/sonata_admin.xml b/src/Resources/config/routing/sonata_admin.xml
index 46db9b38b6..a44f0985fb 100644
--- a/src/Resources/config/routing/sonata_admin.xml
+++ b/src/Resources/config/routing/sonata_admin.xml
@@ -1,31 +1,16 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <routes xmlns="http://symfony.com/schema/routing" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://symfony.com/schema/routing http://symfony.com/schema/routing/routing-1.0.xsd">
-    <route id="sonata_admin_redirect" path="/">
-        <default key="_controller">Symfony\Bundle\FrameworkBundle\Controller\RedirectController::redirectAction</default>
+    <route id="sonata_admin_redirect" path="/" controller="Symfony\Bundle\FrameworkBundle\Controller\RedirectController::redirectAction">
         <default key="route">sonata_admin_dashboard</default>
         <default key="permanent">true</default>
     </route>
-    <route id="sonata_admin_dashboard" path="/dashboard">
-        <default key="_controller">Sonata\AdminBundle\Action\DashboardAction</default>
-    </route>
-    <route id="sonata_admin_retrieve_form_element" path="/core/get-form-field-element">
-        <default key="_controller">sonata.admin.action.retrieve_form_field_element</default>
-    </route>
-    <route id="sonata_admin_append_form_element" path="/core/append-form-field-element">
-        <default key="_controller">sonata.admin.action.append_form_field_element</default>
-    </route>
-    <route id="sonata_admin_short_object_information" path="/core/get-short-object-description.{_format}">
-        <default key="_controller">sonata.admin.action.get_short_object_description</default>
-        <default key="_format">html</default>
+    <route id="sonata_admin_dashboard" path="/dashboard" controller="Sonata\AdminBundle\Action\DashboardAction"/>
+    <route id="sonata_admin_retrieve_form_element" path="/core/get-form-field-element" controller="sonata.admin.action.retrieve_form_field_element"/>
+    <route id="sonata_admin_append_form_element" path="/core/append-form-field-element" controller="sonata.admin.action.append_form_field_element"/>
+    <route id="sonata_admin_short_object_information" path="/core/get-short-object-description.{_format}" format="html" controller="sonata.admin.action.get_short_object_description">
         <requirement key="_format">html|json</requirement>
     </route>
-    <route id="sonata_admin_set_object_field_value" path="/core/set-object-field-value">
-        <default key="_controller">sonata.admin.action.set_object_field_value</default>
-    </route>
-    <route id="sonata_admin_search" path="/search">
-        <default key="_controller">Sonata\AdminBundle\Action\SearchAction</default>
-    </route>
-    <route id="sonata_admin_retrieve_autocomplete_items" path="/core/get-autocomplete-items">
-        <default key="_controller">sonata.admin.action.retrieve_autocomplete_items</default>
-    </route>
+    <route id="sonata_admin_set_object_field_value" path="/core/set-object-field-value" controller="sonata.admin.action.set_object_field_value"/>
+    <route id="sonata_admin_search" path="/search" controller="Sonata\AdminBundle\Action\SearchAction"/>
+    <route id="sonata_admin_retrieve_autocomplete_items" path="/core/get-autocomplete-items" controller="sonata.admin.action.retrieve_autocomplete_items"/>
 </routes>