diff --git a/AutomaticInterface/AutomaticInterface/AutomaticInterfaceGenerator.cs b/AutomaticInterface/AutomaticInterface/AutomaticInterfaceGenerator.cs
index aa8a5b6..f147501 100644
--- a/AutomaticInterface/AutomaticInterface/AutomaticInterfaceGenerator.cs
+++ b/AutomaticInterface/AutomaticInterface/AutomaticInterfaceGenerator.cs
@@ -12,6 +12,7 @@ public class AutomaticInterfaceGenerator : IIncrementalGenerator
     public const string IgnoreAutomaticInterfaceAttributeName = "IgnoreAutomaticInterface";
     public const string NamespaceParameterName = "namespaceName";
     public const string InterfaceParameterName = "interfaceName";
+    public const string AsInternalParameterName = "asInternal";
 
     public void Initialize(IncrementalGeneratorInitializationContext context)
     {
diff --git a/AutomaticInterface/AutomaticInterface/RegisterAttributesExtensions.cs b/AutomaticInterface/AutomaticInterface/RegisterAttributesExtensions.cs
index c10df77..a3d3785 100644
--- a/AutomaticInterface/AutomaticInterface/RegisterAttributesExtensions.cs
+++ b/AutomaticInterface/AutomaticInterface/RegisterAttributesExtensions.cs
@@ -24,12 +24,13 @@ namespace AutomaticInterface
                         /// <summary>
                         /// Use source generator to automatically create a Interface from this class
                         /// </summary>
-                        /// <param name="namespaceName">Namespace name for the generated interface. Defaults to the same namespace as the class.</param>
-                        /// <param name="interfaceName">Interface name for the generated interface. Defaults to an interface version of the class name.</param>
                         [AttributeUsage(AttributeTargets.Class)]
                         internal sealed class {{{AutomaticInterfaceGenerator.DefaultAttributeName}}}Attribute : Attribute
                         {
-                            internal {{{AutomaticInterfaceGenerator.DefaultAttributeName}}}Attribute(string {{{AutomaticInterfaceGenerator.NamespaceParameterName}}} = "", string {{{AutomaticInterfaceGenerator.InterfaceParameterName}}} = "", bool asInternal = false) { }
+                            /// <param name="{{{AutomaticInterfaceGenerator.NamespaceParameterName}}}">Namespace name for the generated interface. Defaults to the same namespace as the class.</param>
+                            /// <param name="{{{AutomaticInterfaceGenerator.InterfaceParameterName}}}">Interface name for the generated interface. Defaults to an interface version of the class name.</param>
+                            /// <param name="{{{AutomaticInterfaceGenerator.AsInternalParameterName}}}">If true, set the visibility of the interface to internal.</param>
+                            internal {{{AutomaticInterfaceGenerator.DefaultAttributeName}}}Attribute(string {{{AutomaticInterfaceGenerator.NamespaceParameterName}}} = "", string {{{AutomaticInterfaceGenerator.InterfaceParameterName}}} = "", bool {{{AutomaticInterfaceGenerator.AsInternalParameterName}}} = false) { }
                         }
                     }
                     """,