diff --git a/llm_server/database/log_to_db.py b/llm_server/database/log_to_db.py
index 76712ff..8e27055 100644
--- a/llm_server/database/log_to_db.py
+++ b/llm_server/database/log_to_db.py
@@ -16,7 +16,7 @@ def log_to_db(ip: str, token: str, prompt: str, response: Union[str, None], gen_
             'response': response,
             'gen_time': gen_time,
             'parameters': parameters,
-            'headers': headers,
+            'headers': dict(headers) if headers else headers,
             'backend_response_code': backend_response_code,
             'request_url': request_url,
             'backend_url': backend_url,