diff --git a/zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/remote/RemoteInterpreterEventPoller.java b/zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/remote/RemoteInterpreterEventPoller.java
index bf64d9fa084..e2a8adddfd2 100644
--- a/zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/remote/RemoteInterpreterEventPoller.java
+++ b/zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/remote/RemoteInterpreterEventPoller.java
@@ -52,7 +52,7 @@
  */
 public class RemoteInterpreterEventPoller extends Thread {
   private static final Logger logger = LoggerFactory.getLogger(RemoteInterpreterEventPoller.class);
-  private static final ScheduledExecutorService appendService =
+  private final ScheduledExecutorService appendService =
       Executors.newSingleThreadScheduledExecutor();
   private final RemoteInterpreterProcessListener listener;
   private final ApplicationEventListener appListener;