diff --git a/.env.example b/.env.example
index 7057281d..c4c5847b 100644
--- a/.env.example
+++ b/.env.example
@@ -33,9 +33,9 @@ MAX_EMBED_TOKENS=8192
 HISTORY_TURNS=3
 COSINE_THRESHOLD=0.2
 TOP_K=60
-MAX_TOKEN_TEXT_CHUNK = 4000
-MAX_TOKEN_RELATION_DESC = 4000
-MAX_TOKEN_ENTITY_DESC = 4000
+MAX_TOKEN_TEXT_CHUNK=4000
+MAX_TOKEN_RELATION_DESC=4000
+MAX_TOKEN_ENTITY_DESC=4000
 ### Settings relative to indexing
 CHUNK_SIZE=1200
 CHUNK_OVERLAP_SIZE=100
diff --git a/lightrag/base.py b/lightrag/base.py
index 210b0ca6..ca1fac7f 100644
--- a/lightrag/base.py
+++ b/lightrag/base.py
@@ -16,6 +16,7 @@ from .types import KnowledgeGraph
 
 load_dotenv()
 
+
 class TextChunkSchema(TypedDict):
     tokens: int
     content: str