diff --git a/api/utils/api_utils.py b/api/utils/api_utils.py
index 630073788..898052447 100644
--- a/api/utils/api_utils.py
+++ b/api/utils/api_utils.py
@@ -628,6 +628,6 @@ async def is_strong_enough(chat_model, embedding_model):
 def get_allowed_llm_factories() -> list:
     factories = LLMFactoriesService.get_all()
     if settings.ALLOWED_LLM_FACTORIES is None:
-        return factories
+        return list(factories)
 
     return [factory for factory in factories if factory.name in settings.ALLOWED_LLM_FACTORIES]