diff --git a/backend/Controllers/AnnouncementsController.cs b/backend/Controllers/AnnouncementsController.cs
index 5658f16..5e11800 100644
--- a/backend/Controllers/AnnouncementsController.cs
+++ b/backend/Controllers/AnnouncementsController.cs
@@ -72,6 +72,7 @@ public class AnnouncementsController : ControllerBase
     }
 
     [HttpGet("{id}")]
+    [AllowAnonymous]
     public async Task<ActionResult<AnnouncementDto>> GetAnnouncement(Guid id)
     {
         var announcement = await _context.Announcements
diff --git a/backend/backend.Tests/Utilities/TestDataFactory.cs b/backend/backend.Tests/Utilities/TestDataFactory.cs
index b8bfdbc..605af17 100644
--- a/backend/backend.Tests/Utilities/TestDataFactory.cs
+++ b/backend/backend.Tests/Utilities/TestDataFactory.cs
@@ -84,7 +84,8 @@ public static class TestDataFactory
     public static Announcement CreateAnnouncement(
         Guid eventId,
         string title = "Test Announcement",
-        string content = "Test announcement content")
+        string content = "Test announcement content",
+        Guid? authorId = null)
     {
         return new Announcement
         {
@@ -92,6 +93,7 @@ public static class TestDataFactory
             EventId = eventId,
             Title = title,
             Content = content,
+            AuthorId = authorId ?? Guid.NewGuid(),
             CreatedAt = DateTime.UtcNow,
             UpdatedAt = DateTime.UtcNow
         };