diff --git a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/server/protocol/DataNodeUsageReportUtil.java b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/server/protocol/DataNodeUsageReportUtil.java
index 3e90752a9ee..112d772b4b7 100644
--- a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/server/protocol/DataNodeUsageReportUtil.java
+++ b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/server/protocol/DataNodeUsageReportUtil.java
@@ -23,7 +23,7 @@
 
 /**
  * This class is helper class to generate a live usage report by calculating
- * the delta between  current DataNode usage metrics and the usage metrics
+ * the delta between current DataNode usage metrics and the usage metrics
  * captured at the time of the last report.
  */
 @InterfaceAudience.Private