diff --git a/Hadoop-Compatible-File-System.md b/Hadoop-Compatible-File-System.md
index e34d5b3..34ad551 100644
--- a/Hadoop-Compatible-File-System.md
+++ b/Hadoop-Compatible-File-System.md
@@ -73,7 +73,7 @@ Both reads and writes are working fine.
     1. `fs.seaweedfs.impl`: This property defines the Seaweed HCFS implementation classes that are contained in the SeaweedFS HDFS client JAR. It is required.
     1. `fs.defaultFS`: This property defines the default file system URI to use. It is optional if a path always has prefix `seaweedfs://localhost:8888`.
     1. `fs.AbstractFileSystem.seaweedfs.impl`: Add the SeaweedFS implementation of Hadoop AbstractFileSystem to delegates to the existing SeaweedFS FileSystem and is only necessary for use with Hadoop 3.x.
-    1. `io.file.buffer.size`: Optionally change the HDFS default 4K buffer size to a larger number, e.g. 4194304.
+    1. `fs.seaweed.buffer.size`: Optionally change the default buffer size 4194304 to a larger number. It will be the default chunk size.
 
 ```
 <configuration>
@@ -90,7 +90,7 @@ Both reads and writes are working fine.
        <value>seaweed.hdfs.SeaweedAbstractFileSystem</value>
     </property>
     <property>
-       <name>io.file.buffer.size</name>
+       <name>fs.seaweed.buffer.size</name>
        <value>4194304</value>
     </property>
 </configuration>