diff --git a/src/Squidex/Areas/Api/Controllers/Assets/Models/AssetDto.cs b/src/Squidex/Areas/Api/Controllers/Assets/Models/AssetDto.cs
index 4ba2cb68f..95562305f 100644
--- a/src/Squidex/Areas/Api/Controllers/Assets/Models/AssetDto.cs
+++ b/src/Squidex/Areas/Api/Controllers/Assets/Models/AssetDto.cs
@@ -34,7 +34,6 @@ namespace Squidex.Areas.Api.Controllers.Assets.Models
         /// <summary>
         /// The file hash.
         /// </summary>
-        [Required]
         public string FileHash { get; set; }
 
         /// <summary>