diff --git a/hadoop-mapreduce-project/CHANGES.txt b/hadoop-mapreduce-project/CHANGES.txt
index fec43482bac..0020a1c45e0 100644
--- a/hadoop-mapreduce-project/CHANGES.txt
+++ b/hadoop-mapreduce-project/CHANGES.txt
@@ -40,6 +40,9 @@ Release 2.0.5-beta - UNRELEASED
     time delta between the end of the shuffle and the start of the reduce.
     (Omkar Vinit Joshi via vinodkv)
 
+    MAPREDUCE-4985. Add compression option to TestDFSIO usage.
+    (Plamen Jeliazkov via shv)
+
   OPTIMIZATIONS
 
   BUG FIXES
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/fs/TestDFSIO.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/fs/TestDFSIO.java
index e903c8dc807..e1288fa71af 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/fs/TestDFSIO.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/fs/TestDFSIO.java
@@ -99,6 +99,7 @@ public class TestDFSIO implements Tool {
                     " [genericOptions]" +
                     " -read [-random | -backward | -skip [-skipSize Size]] |" +
                     " -write | -append | -clean" +
+                    " [-compression codecClassName]" +
                     " [-nrFiles N]" +
                     " [-size Size[B|KB|MB|GB|TB]]" +
                     " [-resFile resultFileName] [-bufferSize Bytes]" +