Index: ChapterX.Application/ReadingListItems/Commands/AddHandler.cs
===================================================================
--- ChapterX.Application/ReadingListItems/Commands/AddHandler.cs	(revision e882b92860e1899312f197af1134bb0f33d30d15)
+++ ChapterX.Application/ReadingListItems/Commands/AddHandler.cs	(revision 877c13c3dd0934c1d31da7988d0d2c2c5925ed55)
@@ -18,8 +18,4 @@
         public async Task<AddResponse> Handle(AddRequest request, CancellationToken cancellationToken)
         {
-            var exists = await _readingListItemsRepository.ExistsAsync(request.ReadingListId, request.StoryId, cancellationToken);
-            if (exists)
-                throw new InvalidOperationException("Story is already in this reading list.");
-
             var readingListItems = new Domain.Entities.ReadingListItems
             {