1 files changed, 3 insertions, 1 deletions
diff --git a/src/main/java/com/juick/service/activities/ActivityListener.java b/src/main/java/com/juick/service/activities/ActivityListener.java
index 3dcd123c..badda8a3 100644
--- a/src/main/java/com/juick/service/activities/ActivityListener.java
+++ b/src/main/java/com/juick/service/activities/ActivityListener.java
@@ -20,10 +20,12 @@ package com.juick.service.activities;
 import org.springframework.context.event.EventListener;
 import org.springframework.scheduling.annotation.Async;
 
+import jakarta.annotation.Nonnull;
+
 public interface ActivityListener {
     @Async
     @EventListener
-    void processFollowEvent(FollowEvent event);
+    void processFollowEvent(@Nonnull FollowEvent event);
     @Async
     @EventListener
     void undoFollowEvent(UndoFollowEvent event);