diff --git a/lightrag/operate.py b/lightrag/operate.py
index 40b01b54..93dc0623 100644
--- a/lightrag/operate.py
+++ b/lightrag/operate.py
@@ -270,7 +270,7 @@ async def _summarize_descriptions(
     use_llm_func = partial(use_llm_func, _priority=8)
 
     language = global_config["addon_params"].get(
-        "language", DEFAULT_SUMMARY_LANGUAGE]
+        "language", DEFAULT_SUMMARY_LANGUAGE
     )
 
     summary_length_recommended = global_config["summary_length_recommended"]