diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index e81a0caa7..25d5f26f5 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -1478,10 +1478,6 @@ void Plater::priv::split_object()
         for (ModelObject* m : new_objects)
         {
             m->name = current_model_object->name + "_" + std::to_string(counter++);
-            for (ModelInstance* i : current_model_object->instances)
-            {
-                m->add_instance(*i);
-            }
         }
 
         remove(obj_idx);