diff --git a/app/services/llm_service.py b/app/services/llm_service.py
index 1ec9fb3..022c1d0 100644
--- a/app/services/llm_service.py
+++ b/app/services/llm_service.py
@@ -196,7 +196,7 @@ def get_llm_service() -> LLMService:
     Returns:
         An instance of a concrete LLMService implementation
     """
-    llm_provider = settings.llm_provider.lower()
+    llm_provider = settings.LLM_PROVIDER.lower()
     
     if llm_provider == "openai" and settings.openai_api_key:
         return OpenAIService()