diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
index a4f0a4a25a8..3c2c9248033 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
+++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
@@ -24,6 +24,9 @@ Release 2.6.0 - UNRELEASED
     HDFS-6643. Refactor INodeWithAdditionalFields.PermissionStatusFormat and
     INodeFile.HeaderFormat. (szetszwo)
 
+    HDFS-6640. Syntax for MKDIRS, CREATESYMLINK, and SETXATTR are given wrongly
+    in WebHdfs document (missed webhdfs/v1). (Stephen Chu via jing9)
+
   OPTIMIZATIONS
 
   BUG FIXES
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/site/apt/WebHDFS.apt.vm b/hadoop-hdfs-project/hadoop-hdfs/src/site/apt/WebHDFS.apt.vm
index aad95eb44be..51bc574095d 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/site/apt/WebHDFS.apt.vm
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/site/apt/WebHDFS.apt.vm
@@ -394,7 +394,7 @@ Hello, webhdfs user!
   * Submit a HTTP PUT request.
 
 +---------------------------------
-curl -i -X PUT "http://<HOST>:<PORT>/<PATH>?op=MKDIRS[&permission=<OCTAL>]"
+curl -i -X PUT "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?op=MKDIRS[&permission=<OCTAL>]"
 +---------------------------------
 
   The client receives a response with a {{{Boolean JSON Schema}<<<boolean>>> JSON object}}:
@@ -419,7 +419,7 @@ Transfer-Encoding: chunked
   * Submit a HTTP PUT request.
 
 +---------------------------------
-curl -i -X PUT "http://<HOST>:<PORT>/<PATH>?op=CREATESYMLINK
+curl -i -X PUT "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?op=CREATESYMLINK
                               &destination=<PATH>[&createParent=<true|false>]"
 +---------------------------------
 
@@ -934,7 +934,7 @@ Transfer-Encoding: chunked
   * Submit a HTTP PUT request.
 
 +---------------------------------
-curl -i -X PUT "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?op=op=SETXATTR
+curl -i -X PUT "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?op=SETXATTR
                               &xattr.name=<XATTRNAME>&xattr.value=<XATTRVALUE>
                               &flag=<FLAG>"
 +---------------------------------