diff --git a/src/FilterLists.Services/FilterList/MappingProfiles/ListDetailsDtoMappingProfile.cs b/src/FilterLists.Services/FilterList/MappingProfiles/ListDetailsDtoMappingProfile.cs
index 5b6e5eb5f..99f2b6f76 100644
--- a/src/FilterLists.Services/FilterList/MappingProfiles/ListDetailsDtoMappingProfile.cs
+++ b/src/FilterLists.Services/FilterList/MappingProfiles/ListDetailsDtoMappingProfile.cs
@@ -1,5 +1,4 @@
-using System;
-using System.Linq;
+using System.Linq;
 using AutoMapper;
 using FilterLists.Services.FilterList.Models;
 using JetBrains.Annotations;
@@ -28,7 +27,6 @@ public ListDetailsDtoMappingProfile() =>
                          .Where(s => s.AddedSnapshotRules.Count > 0 || s.RemovedSnapshotRules.Count > 0)
                          .OrderByDescending(s => s.CreatedDateUtc)
                          .Select(s => s.CreatedDateUtc)
-                         .Cast<DateTime?>()
                          .FirstOrDefault()));
     }
 }
\ No newline at end of file
diff --git a/src/FilterLists.Services/FilterList/MappingProfiles/ListSummaryDtoMappingProfile.cs b/src/FilterLists.Services/FilterList/MappingProfiles/ListSummaryDtoMappingProfile.cs
index fd4ffeec0..a66a9e604 100644
--- a/src/FilterLists.Services/FilterList/MappingProfiles/ListSummaryDtoMappingProfile.cs
+++ b/src/FilterLists.Services/FilterList/MappingProfiles/ListSummaryDtoMappingProfile.cs
@@ -1,5 +1,4 @@
-using System;
-using System.Linq;
+using System.Linq;
 using AutoMapper;
 using FilterLists.Services.FilterList.Models;
 using JetBrains.Annotations;
@@ -19,7 +18,6 @@ public ListSummaryDtoMappingProfile() =>
                          .Where(s => s.AddedSnapshotRules.Count > 0 || s.RemovedSnapshotRules.Count > 0)
                          .OrderByDescending(s => s.CreatedDateUtc)
                          .Select(s => s.CreatedDateUtc)
-                         .Cast<DateTime?>()
                          .FirstOrDefault()));
     }
 }
\ No newline at end of file
diff --git a/src/FilterLists.Services/FilterList/Models/ListDetailsDto.cs b/src/FilterLists.Services/FilterList/Models/ListDetailsDto.cs
index 050d51700..a09d9bef2 100644
--- a/src/FilterLists.Services/FilterList/Models/ListDetailsDto.cs
+++ b/src/FilterLists.Services/FilterList/Models/ListDetailsDto.cs
@@ -8,7 +8,7 @@ namespace FilterLists.Services.FilterList.Models
     public class ListDetailsDto
     {
         public uint Id { get; set; }
-        public DateTime AddedDate { get; set; }
+        public DateTime? AddedDate { get; set; }
         public string ChatUrl { get; set; }
         public string Description { get; set; }
         public string DescriptionSourceUrl { get; set; }
diff --git a/src/FilterLists.Services/FilterList/Models/ListSummaryDto.cs b/src/FilterLists.Services/FilterList/Models/ListSummaryDto.cs
index 6825a76c7..9b782c91d 100644
--- a/src/FilterLists.Services/FilterList/Models/ListSummaryDto.cs
+++ b/src/FilterLists.Services/FilterList/Models/ListSummaryDto.cs
@@ -8,7 +8,7 @@ namespace FilterLists.Services.FilterList.Models
     public class ListSummaryDto
     {
         public uint Id { get; set; }
-        public DateTime AddedDate { get; set; }
+        public DateTime? AddedDate { get; set; }
         public IEnumerable<ListLanguagesDto> Languages { get; set; }
         public string Name { get; set; }
         public DateTime? UpdatedDate { get; set; }