1 files changed, 4 insertions, 0 deletions
diff --git a/src/main/java/com/juick/service/activities/UndoAnnounceEvent.java b/src/main/java/com/juick/service/activities/UndoAnnounceEvent.java
index 683e7f78..a44968c2 100644
--- a/src/main/java/com/juick/service/activities/UndoAnnounceEvent.java
+++ b/src/main/java/com/juick/service/activities/UndoAnnounceEvent.java
@@ -20,6 +20,10 @@ package com.juick.service.activities;
 import org.springframework.context.ApplicationEvent;
 
 public class UndoAnnounceEvent extends ApplicationEvent {
+    /**
+     *
+     */
+    private static final long serialVersionUID = -8563617088145835564L;
     private final String actorUri;
     private final String messageUri;