diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java
index e2acc096f84..6dec3ceac1e 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java
@@ -3790,6 +3790,7 @@ public class AssignmentManager extends ZooKeeperListener {
 
     // Shutdown the threadpool executor service
     threadPoolExecutorService.shutdownNow();
+    scheduledThreadPoolExecutor.shutdownNow();
     zkEventWorkers.shutdownNow();
     regionStateStore.stop();
   }