diff --git a/backend/src/api/Controllers/TodoController.cs b/backend/src/api/Controllers/TodoController.cs
index bc83dc8..dbc0ddb 100644
--- a/backend/src/api/Controllers/TodoController.cs
+++ b/backend/src/api/Controllers/TodoController.cs
@@ -1,6 +1,7 @@
 using core.Ports;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
+using api.Resonses;
 
 namespace api.Controllers;
 
@@ -26,7 +27,7 @@ public IActionResult GetLists()
         return userId switch
         {
             null => Unauthorized(),
-            var user => Ok(_service.GetLists(user)),
+            var user => Ok(_service.GetLists(user).Select(l => l.ToResponse())),
         };
     }
 
@@ -36,7 +37,7 @@ public IActionResult GetList([FromRoute] int id)
         var userId = Request.UserId();
         _logger.LogDebug("User: {user} requested his list: {id}", userId, id);
         if (userId is null) { return Unauthorized(); }
-        var list = _service.GetList(userId, id);
+        var list = _service.GetList(userId, id)?.ToResponse();
         return list switch
         {
             null => NotFound(),
@@ -73,7 +74,7 @@ async Task<IActionResult> Create(string user, string name)
         {
             //TODO: return DTO instead of DAO
             var list = await _service.CreateList(user, name);
-            return Created(HttpContext.Request.Path.Add(new PathString($"/{list.Id}")), list);
+            return Created(HttpContext.Request.Path.Add(new PathString($"/{list.Id}")), list.ToResponse());
         }
     }
 
diff --git a/backend/src/api/Data/DTO/TodoListDTO.cs b/backend/src/api/Data/DTO/TodoListDTO.cs
deleted file mode 100644
index 275e8d4..0000000
--- a/backend/src/api/Data/DTO/TodoListDTO.cs
+++ /dev/null
@@ -1,3 +0,0 @@
-namespace api.Data.DTO;
-
-public record TodoListDTO(int Id, string Name);
diff --git a/backend/src/api/Responses/TodoList.cs b/backend/src/api/Responses/TodoList.cs
new file mode 100644
index 0000000..9207e35
--- /dev/null
+++ b/backend/src/api/Responses/TodoList.cs
@@ -0,0 +1,8 @@
+namespace api.Resonses;
+
+public record TodoList(int Id, string Name);
+
+public static class MapExtensions
+{
+    public static TodoList ToResponse(this core.TodoList list) => new TodoList(list.Id, list.Name);
+}