1 files changed, 4 insertions, 0 deletions
diff --git a/src/main/java/com/juick/service/activities/UndoFollowEvent.java b/src/main/java/com/juick/service/activities/UndoFollowEvent.java
index 2f5201a9..e3c93c73 100644
--- a/src/main/java/com/juick/service/activities/UndoFollowEvent.java
+++ b/src/main/java/com/juick/service/activities/UndoFollowEvent.java
@@ -20,6 +20,10 @@ package com.juick.service.activities;
 import org.springframework.context.ApplicationEvent;
 
 public class UndoFollowEvent extends ApplicationEvent {
+    /**
+     *
+     */
+    private static final long serialVersionUID = 8421957930088395402L;
     private final String actor;
     private final String object;
     /**