diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index cd1166f71a..ef925ed2b2 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -5570,8 +5570,10 @@ void Plater::export_stl_obj(bool extended, bool selection_only)
 
         const SLAPrintObject *object = this->p->sla_print.get_print_object_by_model_object_id(mo.id());
 
-        if (!object || !object->get_mesh_to_print() || object->get_mesh_to_print()->empty())
-            mesh = mesh_to_export_fff(mo, instance_id);
+        if (!object || !object->get_mesh_to_print() || object->get_mesh_to_print()->empty()) {
+            if (!extended)
+                mesh = mesh_to_export_fff(mo, instance_id);
+        }
         else {
             const Transform3d mesh_trafo_inv = object->trafo().inverse();
             const bool is_left_handed = object->is_left_handed();