diff --git a/backend/backend.Tests/Controllers/AnnouncementsControllerTests.cs b/backend/backend.Tests/Controllers/AnnouncementsControllerTests.cs
index 7f74a95..731bb48 100644
--- a/backend/backend.Tests/Controllers/AnnouncementsControllerTests.cs
+++ b/backend/backend.Tests/Controllers/AnnouncementsControllerTests.cs
@@ -472,9 +472,9 @@ public class AnnouncementsControllerTests : IDisposable
         var registration = TestDataFactory.CreateRegistration(event1.Id, participant.Id, RegistrationStatus.Confirmed);
         _context.Registrations.Add(registration);
 
-        var announcement1 = TestDataFactory.CreateAnnouncement(event1.Id, "Announcement 1", "Content");
+        var announcement1 = TestDataFactory.CreateAnnouncement(event1.Id, "Announcement 1", "Content", organizer.Id);
         announcement1.IsPublished = true;
-        var announcement2 = TestDataFactory.CreateAnnouncement(event2.Id, "Announcement 2", "Content");
+        var announcement2 = TestDataFactory.CreateAnnouncement(event2.Id, "Announcement 2", "Content", organizer.Id);
         announcement2.IsPublished = true;
         _context.Announcements.AddRange(announcement1, announcement2);
         await _context.SaveChangesAsync();