diff --git a/src/Spring/Spring.Data.NHibernate21/Data/NHibernate/Bytecode/ProxyFactoryFactory.cs b/src/Spring/Spring.Data.NHibernate21/Data/NHibernate/Bytecode/ProxyFactoryFactory.cs
index 123d66a8..e01a3454 100644
--- a/src/Spring/Spring.Data.NHibernate21/Data/NHibernate/Bytecode/ProxyFactoryFactory.cs
+++ b/src/Spring/Spring.Data.NHibernate21/Data/NHibernate/Bytecode/ProxyFactoryFactory.cs
@@ -51,6 +51,13 @@ namespace Spring.Data.NHibernate.Bytecode
             return false;
         }
 
+        /// <summary>
+        /// </summary>
+        public bool IsProxy(object entity)
+        {
+            return (entity is INHibernateProxy);
+        }
+
         ///<summary>
         ///</summary>
         public IProxyValidator ProxyValidator