diff --git a/llmengine/base_chat_llm.py b/llmengine/base_chat_llm.py
index 12b7438..54954ac 100644
--- a/llmengine/base_chat_llm.py
+++ b/llmengine/base_chat_llm.py
@@ -15,7 +15,8 @@ def llm_register(model_key, Klass):
 	model_pathMap[model_key] = Klass
 
 def get_llm_class(model_path):
-	keys = [k for k in model_pathMap.keys()].sort()
+	keys = [k for k in model_pathMap.keys()]
+	keys.sort()
 	keys.reverse()
 	for k in keys:
 		if len(model_path.split(k)) > 1: