diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt
index e2f176170d..26d84d818c 100644
--- a/hadoop-common-project/hadoop-common/CHANGES.txt
+++ b/hadoop-common-project/hadoop-common/CHANGES.txt
@@ -382,6 +382,9 @@ Trunk (Unreleased)
     HADOOP-11559. Add links to RackAwareness and InterfaceClassification
     to site index (Masatake Iwasaki via aw)
 
+    HADOOP-11581. Multithreaded correctness Warnings
+    #org.apache.hadoop.fs.shell.Ls (Brahma Reddy Battula via aw)
+
   OPTIMIZATIONS
 
     HADOOP-7761. Improve the performance of raw comparisons. (todd)
diff --git a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/shell/Ls.java b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/shell/Ls.java
index 0e467008d4..8ef6d5e628 100644
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/shell/Ls.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/shell/Ls.java
@@ -84,7 +84,7 @@ public static void registerCommands(CommandFactory factory) {
           "  Use time of last access instead of modification for\n" +
           "      display and sorting.";
 
-  protected static final SimpleDateFormat dateFormat =
+  protected final SimpleDateFormat dateFormat =
     new SimpleDateFormat("yyyy-MM-dd HH:mm");
 
   protected int maxRepl = 3, maxLen = 10, maxOwner = 0, maxGroup = 0;