diff --git a/configs/milvus.yaml b/configs/milvus.yaml
index f49dfec5cd..a815a80de4 100644
--- a/configs/milvus.yaml
+++ b/configs/milvus.yaml
@@ -55,7 +55,7 @@ rootCoord:
 
   grpc:
     serverMaxRecvSize: 2147483647 # math.MaxInt32, Maximum data size received by the server
-    serverMaxSendSize: 2147483647 # math.MaxInt32
+    serverMaxSendSize: 2147483647 # math.MaxInt32, Maximum data size sent by the server
     clientMaxRecvSize: 104857600 # 100 MB, Maximum data size received by the client
     clientMaxSendSize: 104857600 # 100 MB, 100 * 1024 * 1024