diff --git a/LightweightIocContainer/Interfaces/Registrations/Fluent/IWithFactory.cs b/LightweightIocContainer/Interfaces/Registrations/Fluent/IWithFactory.cs
index b06d491..918a998 100644
--- a/LightweightIocContainer/Interfaces/Registrations/Fluent/IWithFactory.cs
+++ b/LightweightIocContainer/Interfaces/Registrations/Fluent/IWithFactory.cs
@@ -25,6 +25,13 @@ public interface IWithFactory
     /// <typeparam name="TFactoryImplementation">The type of the implementation for the custom factory</typeparam>
     /// <returns>The current instance of this <see cref="IRegistrationBase"/></returns>
     IRegistrationBase WithFactory<TFactoryInterface, TFactoryImplementation>() where TFactoryImplementation : TFactoryInterface;
+
+    /// <summary>
+    /// Internal method used by the factory source generator to add the generated factory to the registration
+    /// </summary>
+    /// <param name="generatedFactory">The actual generated factory</param>
+    /// <typeparam name="TFactory">The type of the generated factory</typeparam>
+    void AddGeneratedFactory<TFactory>(TFactory generatedFactory);
 }
 
 internal interface IWithFactoryInternal : IWithFactory
diff --git a/LightweightIocContainer/Registrations/RegistrationBase.cs b/LightweightIocContainer/Registrations/RegistrationBase.cs
index ef89a0a..54639b5 100644
--- a/LightweightIocContainer/Registrations/RegistrationBase.cs
+++ b/LightweightIocContainer/Registrations/RegistrationBase.cs
@@ -121,7 +121,12 @@ internal abstract class RegistrationBase : IRegistrationBase, IWithFactoryIntern
         return this;
     }
     
-    internal void AddGeneratedFactory<TFactory>(TFactory generatedFactory)
+    /// <summary>
+    /// Internal method used by the factory source generator to add the generated factory to the registration
+    /// </summary>
+    /// <param name="generatedFactory">The actual generated factory</param>
+    /// <typeparam name="TFactory">The type of the generated factory</typeparam>
+    public void AddGeneratedFactory<TFactory>(TFactory generatedFactory)
     {
         TypedFactory<TFactory> factory = new(generatedFactory);
         Factory = factory;