diff --git a/env.example b/env.example
index 42751abc..c12f645d 100644
--- a/env.example
+++ b/env.example
@@ -63,7 +63,7 @@ ENABLE_LLM_CACHE=true
 ### control the maximum tokens send to LLM (include entities, raltions and chunks)
 # MAX_TOTAL_TOKENS=32000
 ### maxumium related chunks grab from single entity or relations
-# RELATED_CHUNK_NUMBER=10
+# RELATED_CHUNK_NUMBER=5
 
 ### Reranker configuration (Set ENABLE_RERANK to true in reranking model is configed)
 ENABLE_RERANK=False
diff --git a/lightrag/constants.py b/lightrag/constants.py
index 8ce400be..26205689 100644
--- a/lightrag/constants.py
+++ b/lightrag/constants.py
@@ -21,7 +21,7 @@ DEFAULT_MAX_TOTAL_TOKENS = 32000
 DEFAULT_HISTORY_TURNS = 0
 DEFAULT_ENABLE_RERANK = True
 DEFAULT_COSINE_THRESHOLD = 0.2
-DEFAULT_RELATED_CHUNK_NUMBER = 10
+DEFAULT_RELATED_CHUNK_NUMBER = 5
 
 # Separator for graph fields
 GRAPH_FIELD_SEP = "<SEP>"