diff --git a/src/Orchard.Web/Web.config b/src/Orchard.Web/Web.config
index a2592670a..be12b290a 100644
--- a/src/Orchard.Web/Web.config
+++ b/src/Orchard.Web/Web.config
@@ -112,7 +112,6 @@
       <add verb="*" path="theme.txt" validate="false" type="System.Web.HttpNotFoundHandler" />
     </httpHandlers>
   </system.web>
-  <system.web.extensions/>
   <!-- 
         The system.webServer section is required for running ASP.NET AJAX under Internet
         Information Services 7.0.  It is not necessary for previous version of IIS.