diff --git a/src/FluentNHibernate/PersistenceModel.cs b/src/FluentNHibernate/PersistenceModel.cs
index 3a7b00585..f875281b4 100644
--- a/src/FluentNHibernate/PersistenceModel.cs
+++ b/src/FluentNHibernate/PersistenceModel.cs
@@ -249,7 +249,7 @@ public void WriteMappingsTo(TextWriter writer)
         WriteMappingsTo( _ => new XmlTextWriter(writer), false);
     }
 
-    void WriteMappingsTo(Func<HibernateMapping, XmlTextWriter> writerBuilder, bool shouldDispose)
+    public void WriteMappingsTo(Func<HibernateMapping, XmlTextWriter> writerBuilder, bool shouldDispose)
     {
         EnsureMappingsBuilt();