diff --git a/src/FluentNHibernate/DummyPropertyInfo.cs b/src/FluentNHibernate/DummyPropertyInfo.cs
index 6d07ef34e..242da4fb7 100644
--- a/src/FluentNHibernate/DummyPropertyInfo.cs
+++ b/src/FluentNHibernate/DummyPropertyInfo.cs
@@ -4,6 +4,7 @@
 
 namespace FluentNHibernate
 {
+    [Serializable]
     public sealed class DummyPropertyInfo : PropertyInfo
     {
         private readonly string name;