diff --git a/backend/backend.Tests/Controllers/AnnouncementsControllerTests.cs b/backend/backend.Tests/Controllers/AnnouncementsControllerTests.cs
index d3f5d9e..49c09c4 100644
--- a/backend/backend.Tests/Controllers/AnnouncementsControllerTests.cs
+++ b/backend/backend.Tests/Controllers/AnnouncementsControllerTests.cs
@@ -303,7 +303,7 @@ public class AnnouncementsControllerTests : IDisposable
         var eventEntity = TestDataFactory.CreateEvent(organizerId: organizer.Id, status: EventStatus.Published);
         _context.Events.Add(eventEntity);
 
-        var announcement = TestDataFactory.CreateAnnouncement(eventEntity.Id, "Original", "Content");
+        var announcement = TestDataFactory.CreateAnnouncement(eventEntity.Id, "Original", "Content", organizer.Id);
         _context.Announcements.Add(announcement);
         await _context.SaveChangesAsync();