diff --git a/backend/Controllers/AnnouncementsController.cs b/backend/Controllers/AnnouncementsController.cs
index 5e11800..b97248a 100644
--- a/backend/Controllers/AnnouncementsController.cs
+++ b/backend/Controllers/AnnouncementsController.cs
@@ -99,6 +99,7 @@ public class AnnouncementsController : ControllerBase
     }
 
     [HttpGet("event/{eventId}")]
+    [AllowAnonymous]
     public async Task<ActionResult<IEnumerable<AnnouncementDto>>> GetEventAnnouncements(Guid eventId)
     {
         var userId = GetCurrentUserId();
diff --git a/backend/backend.Tests/Controllers/AnnouncementsControllerTests.cs b/backend/backend.Tests/Controllers/AnnouncementsControllerTests.cs
index 37ca468..d3f5d9e 100644
--- a/backend/backend.Tests/Controllers/AnnouncementsControllerTests.cs
+++ b/backend/backend.Tests/Controllers/AnnouncementsControllerTests.cs
@@ -151,7 +151,7 @@ public class AnnouncementsControllerTests : IDisposable
         var eventEntity = TestDataFactory.CreateEvent(organizerId: organizer.Id, status: EventStatus.Published);
         _context.Events.Add(eventEntity);
 
-        var announcement = TestDataFactory.CreateAnnouncement(eventEntity.Id, "Title", "Content");
+        var announcement = TestDataFactory.CreateAnnouncement(eventEntity.Id, "Title", "Content", organizer.Id);
         announcement.IsPublished = true;
         _context.Announcements.Add(announcement);
         await _context.SaveChangesAsync();
@@ -180,7 +180,7 @@ public class AnnouncementsControllerTests : IDisposable
         var eventEntity = TestDataFactory.CreateEvent(organizerId: organizer.Id, status: EventStatus.Published);
         _context.Events.Add(eventEntity);
 
-        var announcement = TestDataFactory.CreateAnnouncement(eventEntity.Id, "Draft Title", "Content");
+        var announcement = TestDataFactory.CreateAnnouncement(eventEntity.Id, "Draft Title", "Content", organizer.Id);
         announcement.IsPublished = false;
         _context.Announcements.Add(announcement);
         await _context.SaveChangesAsync();
diff --git a/backend/backend.Tests/Controllers/DashboardControllerTests.cs b/backend/backend.Tests/Controllers/DashboardControllerTests.cs
index 4a478d7..b14a048 100644
--- a/backend/backend.Tests/Controllers/DashboardControllerTests.cs
+++ b/backend/backend.Tests/Controllers/DashboardControllerTests.cs
@@ -155,15 +155,13 @@ public class DashboardControllerTests : IDisposable
             organizerId: organizer.Id,
             status: EventStatus.Completed);
 
-        _context.Events.AddRange(upcomingEvent, pastEvent);
+        var cancelledEvent = TestDataFactory.CreateEvent(name: "Cancelled Event", organizerId: organizer.Id, status: EventStatus.Published);
+        _context.Events.AddRange(upcomingEvent, pastEvent, cancelledEvent);
         await _context.SaveChangesAsync();
 
         var upcomingReg = TestDataFactory.CreateRegistration(upcomingEvent.Id, participant.Id, RegistrationStatus.Confirmed);
         var pastReg = TestDataFactory.CreateRegistration(pastEvent.Id, participant.Id, RegistrationStatus.Completed);
-        var cancelledReg = TestDataFactory.CreateRegistration(
-            TestDataFactory.CreateEvent(name: "Cancelled Event", organizerId: organizer.Id, status: EventStatus.Published).Id,
-            participant.Id,
-            RegistrationStatus.Cancelled);
+        var cancelledReg = TestDataFactory.CreateRegistration(cancelledEvent.Id, participant.Id, RegistrationStatus.Cancelled);
         _context.Registrations.AddRange(upcomingReg, pastReg, cancelledReg);
         await _context.SaveChangesAsync();