diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt
index 010ba3c330a..d3d8c7be3bd 100644
--- a/hadoop-common-project/hadoop-common/CHANGES.txt
+++ b/hadoop-common-project/hadoop-common/CHANGES.txt
@@ -38,6 +38,9 @@ Release 2.7.2 - UNRELEASED
     HADOOP-10365. BufferedOutputStream in FileUtil#unpackEntries() should be
     closed in finally block. (Kiran Kumar M R and Sanghyun Yun via ozawa)
 
+    HADOOP-12006. Remove unimplemented option for `hadoop fs -ls` from
+    document in branch-2.7. (Akira AJISAKA via ozawa)
+
 Release 2.7.1 - 2015-07-06 
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/FileSystemShell.md b/hadoop-common-project/hadoop-common/src/site/markdown/FileSystemShell.md
index 494ad71e08c..4f27e24f937 100644
--- a/hadoop-common-project/hadoop-common/src/site/markdown/FileSystemShell.md
+++ b/hadoop-common-project/hadoop-common/src/site/markdown/FileSystemShell.md
@@ -391,17 +391,13 @@ Return usage output.
 ls
 ----
 
-Usage: `hadoop fs -ls [-d] [-h] [-R] [-t] [-S] [-r] [-u] <args> `
+Usage: `hadoop fs -ls [-d] [-h] [-R] <args> `
 
 Options:
 
 * -d: Directories are listed as plain files.
 * -h: Format file sizes in a human-readable fashion (eg 64.0m instead of 67108864).
 * -R: Recursively list subdirectories encountered.
-* -t: Sort output by modification time (most recent first).
-* -S: Sort output by file size.
-* -r: Reverse the sort order.
-* -u: Use access time rather than modification time for display and sorting.  
 
 For a file ls returns stat on the file with the following format: