diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
index f75eb4097a3..67f69fc38ad 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
+++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
@@ -1889,6 +1889,9 @@ Release 2.7.3 - UNRELEASED
     HDFS-9752. Permanent write failures may happen to slow writers during
     datanode rolling upgrades (Walter Su via kihwal)
 
+    HDFS-9784. Example usage is not correct in Transparent Encryption document.
+    (Takashi Ohnishi via aajisaka)
+
 Release 2.7.2 - 2016-01-25
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/TransparentEncryption.md b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/TransparentEncryption.md
index 05e42492909..c764eed94ca 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/TransparentEncryption.md
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/TransparentEncryption.md
@@ -182,11 +182,11 @@ Example usage
 These instructions assume that you are running as the normal user or HDFS superuser as is appropriate. Use `sudo` as needed for your environment.
 
     # As the normal user, create a new encryption key
-    hadoop key create myKey
+    hadoop key create mykey
 
     # As the super user, create a new empty directory and make it an encryption zone
     hadoop fs -mkdir /zone
-    hdfs crypto -createZone -keyName myKey -path /zone
+    hdfs crypto -createZone -keyName mykey -path /zone
 
     # chown it to the normal user
     hadoop fs -chown myuser:myuser /zone