diff --git a/backend/core/helpers.py b/backend/core/helpers.py
index daec326d5..9653d254c 100644
--- a/backend/core/helpers.py
+++ b/backend/core/helpers.py
@@ -1182,7 +1182,6 @@ def duplicate_related_objects(
     duplicate_object: models.Model,
     target_folder: Folder,
     field_name: str,
-    model_class: Type[models.Model],
 ):
     """
     Duplicates related objects from a source object to a duplicate object, avoiding duplicates in the target folder.
@@ -1190,9 +1189,8 @@ def duplicate_related_objects(
     Parameters:
     - source_object (object): The source object containing related objects to duplicate.
     - duplicate_object (object): The object where duplicated objects will be linked.
-    - target_folder (object): The folder where duplicated objects will be stored.
-    - field_name (str): The field name representing the related objects in the source object.
-    - model_class (type): The model class of the related objects.
+    - target_folder (Folder): The folder where duplicated objects will be stored.
+    - field_name (str): The field name representing the related objects in the source
     """
 
     def process_related_object(
@@ -1248,6 +1246,8 @@ def duplicate_and_link_object(new_obj, duplicate_object, target_folder, field_na
         new_obj.save()
         link_existing_object(duplicate_object, new_obj, field_name)
 
+    model_class = getattr(type(source_object), field_name).field.related_model
+
     # Get parent and sub-folders of the target folder
     target_parent_folders = target_folder.get_parent_folders()
     sub_folders = target_folder.sub_folders()
diff --git a/backend/core/views.py b/backend/core/views.py
index b869938cd..07a48ed1d 100644
--- a/backend/core/views.py
+++ b/backend/core/views.py
@@ -641,21 +641,18 @@ def duplicate(self, request, pk):
                     duplicate_scenario,
                     duplicate_risk_assessment.project.folder,
                     "applied_controls",
-                    AppliedControl,
                 )
                 duplicate_related_objects(
                     scenario,
                     duplicate_scenario,
                     duplicate_risk_assessment.project.folder,
                     "threats",
-                    Threat,
                 )
                 duplicate_related_objects(
                     scenario,
                     duplicate_scenario,
                     duplicate_risk_assessment.project.folder,
                     "assets",
-                    Asset,
                 )
 
                 if (