diff --git a/core/server/master/src/main/java/alluxio/master/file/activesync/ActiveSyncManager.java b/core/server/master/src/main/java/alluxio/master/file/activesync/ActiveSyncManager.java
index 70bfa4bf5741..01f78135f4a1 100644
--- a/core/server/master/src/main/java/alluxio/master/file/activesync/ActiveSyncManager.java
+++ b/core/server/master/src/main/java/alluxio/master/file/activesync/ActiveSyncManager.java
@@ -102,7 +102,7 @@ public class ActiveSyncManager implements Journaled {
   private boolean mStarted;
 
   /**
-   * Constructs a Active Sync Manager.
+   * Constructs an Active Sync Manager.
    *
    * @param mountTable mount table
    * @param fileSystemMaster file system master