diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/web/resources/NamenodeWebHdfsMethods.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/web/resources/NamenodeWebHdfsMethods.java
index a28576b9d97..59ad9f07e5d 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/web/resources/NamenodeWebHdfsMethods.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/web/resources/NamenodeWebHdfsMethods.java
@@ -330,7 +330,7 @@ private URI redirectURI(final NameNode namenode,
     } else {
       //generate a token
       final Token<? extends TokenIdentifier> t = generateDelegationToken(
-          namenode, ugi, userPrincipal.getName());
+          namenode, ugi, null);
       delegationQuery = "&" + new DelegationParam(t.encodeToUrlString());
     }
     final String query = op.toQueryString() + delegationQuery