diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
index b781053a767..41088cf59ce 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
@@ -3558,7 +3558,7 @@ public String getDataPort(){
 
   @Override // DataNodeMXBean
   public String getHttpPort(){
-    return this.getConf().get("dfs.datanode.info.port");
+    return String.valueOf(infoPort);
   }
 
   @Override // DataNodeMXBean
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeMXBean.java b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeMXBean.java
index 28330139bc4..9241f57cf36 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeMXBean.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeMXBean.java
@@ -92,6 +92,7 @@ public void testDataNodeMXBean() throws Exception {
       Assert.assertEquals(datanode.getRpcPort(),rpcPort);
       // get attribute "HttpPort"
       String httpPort = (String)mbs.getAttribute(mxbeanName, "HttpPort");
+      Assert.assertNotNull(httpPort);
       Assert.assertEquals(datanode.getHttpPort(),httpPort);
       // get attribute "NamenodeAddresses"
       String namenodeAddresses = (String)mbs.getAttribute(mxbeanName,