diff --git a/src/Orchard/Data/SessionFactoryHolder.cs b/src/Orchard/Data/SessionFactoryHolder.cs
index 8a574d53a..4f5c64bad 100644
--- a/src/Orchard/Data/SessionFactoryHolder.cs
+++ b/src/Orchard/Data/SessionFactoryHolder.cs
@@ -1,6 +1,5 @@
 using System;
 using System.IO;
-using System.Runtime.Serialization.Formatters.Soap;
 using System.Xml.Serialization;
 using NHibernate;
 using NHibernate.Cfg;