diff --git a/Start/Shared/BookmarkContainerDto.cs b/Start/Shared/BookmarkContainerDto.cs
index a979633..b729b95 100644
--- a/Start/Shared/BookmarkContainerDto.cs
+++ b/Start/Shared/BookmarkContainerDto.cs
@@ -6,6 +6,7 @@ using System.Text.Json.Serialization;
 namespace Start.Shared {
 	public class BookmarkContainerDto {
 		public int BookmarkContainerId { get; set; }
+		[Required]
 		[StringLength(300)]
 		public string Title { get; set; }