diff --git a/python/core/component.py b/python/core/component.py
index 785d528f..1bdee491 100644
--- a/python/core/component.py
+++ b/python/core/component.py
@@ -651,7 +651,7 @@ def create_output(cls, type, text, role="tool", name="", visible_scope="all", ra
             elif type == "files":
                 key_list = ["filename", "url"]
             elif type == "references":
-                key_list = ["type", "source", "doc_id", "title", "content"]
+                key_list = []
             elif type == "image":
                 key_list = ["filename", "url"]
             elif type == "chart":