diff --git a/scheduler/views/api/folder.py b/scheduler/views/api/folder.py
index d39e858..ca4489e 100644
--- a/scheduler/views/api/folder.py
+++ b/scheduler/views/api/folder.py
@@ -91,7 +91,7 @@ def _insert_folder(self, folders, folder):
             if parent:
                 self._add_child(parent, folder)
             else:
-                parent = self._folder(_get_folder_by_id(parent_id))
+                parent = self._folder(self._get_folder_by_id(parent_id))
                 self._add_child(parent, folder)
                 self._insert_folder(folders, parent)
         else: