diff --git a/packages/csharp/ArmoniK.Api.Worker/Worker/TaskHandler.cs b/packages/csharp/ArmoniK.Api.Worker/Worker/TaskHandler.cs
index 5f287396e..c13820e6e 100644
--- a/packages/csharp/ArmoniK.Api.Worker/Worker/TaskHandler.cs
+++ b/packages/csharp/ArmoniK.Api.Worker/Worker/TaskHandler.cs
@@ -38,7 +38,7 @@
 
 namespace ArmoniK.Api.Worker.Worker;
 
-public class ReadFromFolderDict : IReadOnlyDictionary<string, byte[]>
+internal class ReadFromFolderDict : IReadOnlyDictionary<string, byte[]>
 {
   private readonly Dictionary<string, byte[]> data_ = new();
   private readonly IList<string>              dataDependencies_;