diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSAdmin.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSAdmin.java
index 4b624a59bdb..bd3ed15c87c 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSAdmin.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSAdmin.java
@@ -716,7 +716,7 @@ public void allowSnapshot(String[] argv) throws IOException {
   }
   
   /**
-   * Allow snapshot on a directory.
+   * Disallow snapshot on a directory.
    * Usage: hdfs dfsadmin -disallowSnapshot snapshotDir
    * @param argv List of of command line parameters.
    * @exception IOException