diff --git a/src/Umbraco.Web/Features/DisabledFeatures.cs b/src/Umbraco.Web/Features/DisabledFeatures.cs
index 85d8e12b38..09b68f59fd 100644
--- a/src/Umbraco.Web/Features/DisabledFeatures.cs
+++ b/src/Umbraco.Web/Features/DisabledFeatures.cs
@@ -6,7 +6,7 @@ namespace Umbraco.Web.Features
     /// <summary>
     /// Represents Umbraco features that can be disabled
     /// </summary>
-    public class DisabledFeatures
+    internal class DisabledFeatures
     {
         public DisabledFeatures()
         {
diff --git a/src/Umbraco.Web/Features/FeaturesResolver.cs b/src/Umbraco.Web/Features/FeaturesResolver.cs
index 3b7b0b3b36..e7dd5a4a88 100644
--- a/src/Umbraco.Web/Features/FeaturesResolver.cs
+++ b/src/Umbraco.Web/Features/FeaturesResolver.cs
@@ -2,7 +2,7 @@ using Umbraco.Core.ObjectResolution;
 
 namespace Umbraco.Web.Features
 {
-    public class FeaturesResolver : SingleObjectResolverBase<FeaturesResolver, UmbracoFeatures>
+    internal class FeaturesResolver : SingleObjectResolverBase<FeaturesResolver, UmbracoFeatures>
     {
         public FeaturesResolver(UmbracoFeatures value) : base(value)
         {
diff --git a/src/Umbraco.Web/Features/TypeList.cs b/src/Umbraco.Web/Features/TypeList.cs
index 86b24533ac..f415b257f7 100644
--- a/src/Umbraco.Web/Features/TypeList.cs
+++ b/src/Umbraco.Web/Features/TypeList.cs
@@ -7,7 +7,7 @@ namespace Umbraco.Web.Features
     /// Maintains a list of strongly typed types
     /// </summary>
     /// <typeparam name="T"></typeparam>
-    public class TypeList<T>
+    internal class TypeList<T>
     {
         private readonly List<Type> _disabled = new List<Type>();
 
diff --git a/src/Umbraco.Web/Features/UmbracoFeatures.cs b/src/Umbraco.Web/Features/UmbracoFeatures.cs
index 5d4570c4f2..04bc6da363 100644
--- a/src/Umbraco.Web/Features/UmbracoFeatures.cs
+++ b/src/Umbraco.Web/Features/UmbracoFeatures.cs
@@ -3,7 +3,7 @@ namespace Umbraco.Web.Features
     /// <summary>
     /// Represents Umbraco features that can be toggled
     /// </summary>
-    public class UmbracoFeatures
+    internal class UmbracoFeatures
     {
         public UmbracoFeatures()
         {
diff --git a/src/Umbraco.Web/Properties/AssemblyInfo.cs b/src/Umbraco.Web/Properties/AssemblyInfo.cs
index c016d328a9..9f235e00d5 100644
--- a/src/Umbraco.Web/Properties/AssemblyInfo.cs
+++ b/src/Umbraco.Web/Properties/AssemblyInfo.cs
@@ -40,6 +40,7 @@ using System.Security;
 [assembly: InternalsVisibleTo("Umbraco.Deploy.Cloud")]
 [assembly: InternalsVisibleTo("Umbraco.ModelsBuilder")]
 [assembly: InternalsVisibleTo("Umbraco.ModelsBuilder.AspNet")]
+[assembly: InternalsVisibleTo("Umbraco.Headless")]
 [assembly: InternalsVisibleTo("DynamicProxyGenAssembly2")]
 
 [assembly: InternalsVisibleTo("Umbraco.Forms.Core")]