diff --git a/backend/app/settings.py b/backend/app/settings.py
index f5246cd..58333d9 100644
--- a/backend/app/settings.py
+++ b/backend/app/settings.py
@@ -10,8 +10,8 @@ from app.xinference.base import XinferenceEmbedding, XinferenceRerank
 
 
 def get_node_postprocessors():
-    rerank_enabled = os.getenv("RERANK_ENABLED")
-    if rerank_enabled is None or rerank_enabled is False:
+    rerank_enabled = os.getenv("RERANK_ENABLED").title()
+    if rerank_enabled is None or rerank_enabled == 'False':
         return []
 
     rerank_model = os.getenv("RERANK_MODEL")