diff --git a/core/server/worker/src/main/java/alluxio/worker/block/BlockHeartbeatReport.java b/core/server/worker/src/main/java/alluxio/worker/block/BlockHeartbeatReport.java
index <HASH>..<HASH> 100644
--- a/core/server/worker/src/main/java/alluxio/worker/block/BlockHeartbeatReport.java
+++ b/core/server/worker/src/main/java/alluxio/worker/block/BlockHeartbeatReport.java
@@ -18,7 +18,7 @@ import java.util.Map;
 import javax.annotation.concurrent.ThreadSafe;
 
 /**
- * Container for the delta information in each worker to master heartbeat.
+ * Container for the delta information in each worker-to-master heartbeat.
  */
 @ThreadSafe
 public final class BlockHeartbeatReport {
add the changes for issue#<I> (#<I>)