diff --git a/ai-hub/app/core/rag_service.py b/ai-hub/app/core/rag_service.py
index 77e1cc0..dd0a7fb 100644
--- a/ai-hub/app/core/rag_service.py
+++ b/ai-hub/app/core/rag_service.py
@@ -5,6 +5,7 @@
 from app.core.vector_store import FaissVectorStore # Import the concrete vector store implementation
 from app.db import models # Import the database models
 from app.core.retrievers import Retriever # Import the retriever base class
+from app.core import llm_providers # Import the retriever base class
 
 # --- Placeholder/Helper functions and classes for dependencies ---
 
@@ -22,8 +23,9 @@
     A placeholder function to retrieve the correct LLM provider.
     This resolves the AttributeError from the test suite.
     """
+    
     print(f"Retrieving LLM provider for model: {model_name}")
-    return LLMProvider()
+    return llm_providers.get_llm_provider(model_name)
 
 # --- Main RAG Service Class ---