diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/config/esi.xml b/src/Symfony/Bundle/FrameworkBundle/Resources/config/esi.xml
index 015afef397..d047196429 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/config/esi.xml
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/config/esi.xml
@@ -13,8 +13,8 @@
         <service id="esi" class="%esi.class%" />
 
         <service id="esi_listener" class="%esi_listener.class%">
-          <tag name="kernel.event_listener" event="kernel.response" method="onKernelResponse" />
-          <argument type="service" id="esi" on-invalid="ignore" />
+            <tag name="kernel.event_listener" event="kernel.response" method="onKernelResponse" />
+            <argument type="service" id="esi" on-invalid="ignore" />
         </service>
     </services>
 </container>