diff --git a/gns3server/controller/import_project.py b/gns3server/controller/import_project.py
index c03d14f3..4af3717c 100644
--- a/gns3server/controller/import_project.py
+++ b/gns3server/controller/import_project.py
@@ -203,7 +203,7 @@ def _create_symbolic_links(zip_file, path):
                 os.remove(symlink_path)
                 os.symlink(symlink_target, symlink_path)
             except OSError as e:
-                raise aiohttp.web.HTTPConflict(text=f"Cannot create symbolic link: {e}")
+                raise ControllerError(f"Cannot create symbolic link: {e}")
 
 def _move_node_file(path, old_id, new_id):
     """