diff --git a/src/FilterLists.Services/FilterListService/FilterListService.cs b/src/FilterLists.Services/FilterListService/FilterListService.cs
index c51994c65..0658a9000 100644
--- a/src/FilterLists.Services/FilterListService/FilterListService.cs
+++ b/src/FilterLists.Services/FilterListService/FilterListService.cs
@@ -25,11 +25,11 @@ public async Task<IEnumerable<FilterListSummaryDto>> GetAllSummariesAsync()
                                              .ToListAsync();
         }
 
-        public async Task<FilterListDetailsDto> GetDetailsAsync(int id)
+        public async Task<ListDetailsDto> GetDetailsAsync(int id)
         {
             return await filterListsDbContext.FilterLists
                                              .AsNoTracking()
-                                             .ProjectTo<FilterListDetailsDto>()
+                                             .ProjectTo<ListDetailsDto>()
                                              .FirstAsync(x => x.Id == id);
         }
     }
diff --git a/src/FilterLists.Services/FilterListService/FilterListDetailsDto.cs b/src/FilterLists.Services/FilterListService/ListDetailsDto.cs
similarity index 58%
rename from src/FilterLists.Services/FilterListService/FilterListDetailsDto.cs
rename to src/FilterLists.Services/FilterListService/ListDetailsDto.cs
index 212fae25c..c41bbb9d8 100644
--- a/src/FilterLists.Services/FilterListService/FilterListDetailsDto.cs
+++ b/src/FilterLists.Services/FilterListService/ListDetailsDto.cs
@@ -1,10 +1,9 @@
 using System;
 using System.Collections.Generic;
-using FilterLists.Data.Entities;
 
 namespace FilterLists.Services.FilterListService
 {
-    public class FilterListDetailsDto
+    public class ListDetailsDto
     {
         public int Id { get; set; }
         public string Description { get; set; }
@@ -16,11 +15,27 @@ public class FilterListDetailsDto
         public string HomeUrl { get; set; }
         public string IssuesUrl { get; set; }
         public IEnumerable<string> Languages { get; set; }
-        public IEnumerable<MaintainerDto> Maintainers { get; set; }
+        public IEnumerable<ListMaintainerDto> Maintainers { get; set; }
         public string Name { get; set; }
         public string PolicyUrl { get; set; }
         public DateTime? PublishedDate { get; set; }
         public string SubmissionUrl { get; set; }
         public string ViewUrl { get; set; }
     }
+
+    public class ListMaintainerDto
+    {
+        public int Id { get; set; }
+        public string EmailAddress { get; set; }
+        public string HomeUrl { get; set; }
+        public string Name { get; set; }
+        public string TwitterHandle { get; set; }
+        public IEnumerable<MaintainerAdditionalListsDto> AdditionalLists { get; set; }
+    }
+
+    public class MaintainerAdditionalListsDto
+    {
+        public int Id { get; set; }
+        public string Name { get; set; }
+    }
 }
\ No newline at end of file
diff --git a/src/FilterLists.Services/FilterListService/MaintainerDto.cs b/src/FilterLists.Services/FilterListService/MaintainerDto.cs
deleted file mode 100644
index e4b1589ba..000000000
--- a/src/FilterLists.Services/FilterListService/MaintainerDto.cs
+++ /dev/null
@@ -1,11 +0,0 @@
-namespace FilterLists.Services.FilterListService
-{
-    public class MaintainerDto
-    {
-        public int Id { get; set; }
-        public string EmailAddress { get; set; }
-        public string HomeUrl { get; set; }
-        public string Name { get; set; }
-        public string TwitterHandle { get; set; }
-    }
-}
\ No newline at end of file
diff --git a/src/FilterLists.Services/FilterListService/MappingProfiles.cs b/src/FilterLists.Services/FilterListService/MappingProfiles.cs
index 8a5e563d0..1025663f7 100644
--- a/src/FilterLists.Services/FilterListService/MappingProfiles.cs
+++ b/src/FilterLists.Services/FilterListService/MappingProfiles.cs
@@ -8,7 +8,12 @@ public class MappingProfiles : Profile
     {
         public MappingProfiles()
         {
-            CreateMap<FilterList, FilterListDetailsDto>()
+            CreateMap<FilterList, FilterListSummaryDto>()
+                .ForMember(dto => dto.Languages,
+                    conf => conf.MapFrom(list =>
+                        list.FilterListLanguages.Select(listLangs => listLangs.Language.Name)));
+
+            CreateMap<FilterList, ListDetailsDto>()
                 .ForMember(dto => dto.Languages,
                     conf => conf.MapFrom(list =>
                         list.FilterListLanguages.Select(listLangs => listLangs.Language.Name)))
@@ -16,11 +21,10 @@ public MappingProfiles()
                     conf => conf.MapFrom(list =>
                         list.FilterListMaintainers.Select(listMaints => listMaints.Maintainer)));
 
-            //TODO: improve performance (https://stackoverflow.com/q/48897083/2343739)
-            CreateMap<FilterList, FilterListSummaryDto>()
-                .ForMember(dto => dto.Languages,
-                    conf => conf.MapFrom(list =>
-                        list.FilterListLanguages.Select(listLangs => listLangs.Language.Name)));
+            CreateMap<Maintainer, ListMaintainerDto>()
+                .ForMember(dto => dto.AdditionalLists,
+                    conf => conf.MapFrom(maint =>
+                        maint.FilterListMaintainers.Select(listMaints => listMaints.FilterList)));
         }
     }
 }
\ No newline at end of file