diff --git a/services/Directory/FilterLists.Directory.Api/Controllers/LanguagesController.cs b/services/Directory/FilterLists.Directory.Api/Controllers/LanguagesController.cs
index 27f9e58c6..0f0053b32 100644
--- a/services/Directory/FilterLists.Directory.Api/Controllers/LanguagesController.cs
+++ b/services/Directory/FilterLists.Directory.Api/Controllers/LanguagesController.cs
@@ -25,9 +25,9 @@ public LanguagesController(IMemoryCache cache, IMediator mediator) : base(cache)
         /// <returns>The languages targeted by FilterLists.</returns>
         [HttpGet]
         [ProducesResponseType(typeof(IEnumerable<GetLanguages.LanguageVm>), StatusCodes.Status200OK)]
-        public async Task<IActionResult> Get(CancellationToken cancellationToken)
+        public Task<IActionResult> Get(CancellationToken cancellationToken)
         {
-            return await CacheGetOrCreateAsync(() => _mediator.Send(new GetLanguages.Query(), cancellationToken));
+            return CacheGetOrCreateAsync(() => _mediator.Send(new GetLanguages.Query(), cancellationToken));
         }
     }
 }
diff --git a/services/Directory/FilterLists.Directory.Api/Controllers/LicensesController.cs b/services/Directory/FilterLists.Directory.Api/Controllers/LicensesController.cs
index b4f1faf0f..face7fe7f 100644
--- a/services/Directory/FilterLists.Directory.Api/Controllers/LicensesController.cs
+++ b/services/Directory/FilterLists.Directory.Api/Controllers/LicensesController.cs
@@ -25,9 +25,9 @@ public LicensesController(IMemoryCache cache, IMediator mediator) : base(cache)
         /// <returns>The licenses applied to FilterLists.</returns>
         [HttpGet]
         [ProducesResponseType(typeof(IEnumerable<GetLicenses.LicenseVm>), StatusCodes.Status200OK)]
-        public async Task<IActionResult> Get(CancellationToken cancellationToken)
+        public Task<IActionResult> Get(CancellationToken cancellationToken)
         {
-            return await CacheGetOrCreateAsync(() => _mediator.Send(new GetLicenses.Query(), cancellationToken));
+            return CacheGetOrCreateAsync(() => _mediator.Send(new GetLicenses.Query(), cancellationToken));
         }
     }
 }
diff --git a/services/Directory/FilterLists.Directory.Api/Controllers/ListsController.cs b/services/Directory/FilterLists.Directory.Api/Controllers/ListsController.cs
index 70086f310..3633c1be7 100644
--- a/services/Directory/FilterLists.Directory.Api/Controllers/ListsController.cs
+++ b/services/Directory/FilterLists.Directory.Api/Controllers/ListsController.cs
@@ -26,9 +26,9 @@ public ListsController(IMemoryCache cache, IMediator mediator) : base(cache)
         /// <returns>The FilterLists.</returns>
         [HttpGet]
         [ProducesResponseType(typeof(IEnumerable<ListVm>), StatusCodes.Status200OK)]
-        public async Task<IActionResult> Get(CancellationToken cancellationToken)
+        public Task<IActionResult> Get(CancellationToken cancellationToken)
         {
-            return await CacheGetOrCreateAsync(() => _mediator.Send(new GetLists.Query(), cancellationToken));
+            return CacheGetOrCreateAsync(() => _mediator.Send(new GetLists.Query(), cancellationToken));
         }
 
         /// <summary>
@@ -37,13 +37,12 @@ public async Task<IActionResult> Get(CancellationToken cancellationToken)
         /// <param name="id">The identifier of the FilterList.</param>
         /// <param name="cancellationToken">The cancellation token.</param>
         /// <returns>The details of the FilterList.</returns>
-        [HttpGet("{id}")]
+        [HttpGet("{id:int}")]
         [ProducesResponseType(typeof(ListDetailsVm), StatusCodes.Status200OK)]
         [ProducesResponseType(StatusCodes.Status404NotFound)]
-        public async Task<IActionResult> GetDetails(int id, CancellationToken cancellationToken)
+        public Task<IActionResult> GetDetails(int id, CancellationToken cancellationToken)
         {
-            return await CacheGetOrCreateAsync(() => _mediator.Send(new GetListDetails.Query(id), cancellationToken),
-                id);
+            return CacheGetOrCreateAsync(() => _mediator.Send(new GetListDetails.Query(id), cancellationToken), id);
         }
     }
 }
diff --git a/services/Directory/FilterLists.Directory.Api/Controllers/MaintainersController.cs b/services/Directory/FilterLists.Directory.Api/Controllers/MaintainersController.cs
index 681f9898c..b018ddd00 100644
--- a/services/Directory/FilterLists.Directory.Api/Controllers/MaintainersController.cs
+++ b/services/Directory/FilterLists.Directory.Api/Controllers/MaintainersController.cs
@@ -25,9 +25,9 @@ public MaintainersController(IMemoryCache cache, IMediator mediator) : base(cach
         /// <returns>The maintainers of FilterLists.</returns>
         [HttpGet]
         [ProducesResponseType(typeof(IEnumerable<GetMaintainers.MaintainerVm>), StatusCodes.Status200OK)]
-        public async Task<IActionResult> Get(CancellationToken cancellationToken)
+        public Task<IActionResult> Get(CancellationToken cancellationToken)
         {
-            return await CacheGetOrCreateAsync(() => _mediator.Send(new GetMaintainers.Query(), cancellationToken));
+            return CacheGetOrCreateAsync(() => _mediator.Send(new GetMaintainers.Query(), cancellationToken));
         }
     }
 }
diff --git a/services/Directory/FilterLists.Directory.Api/Controllers/SoftwareController.cs b/services/Directory/FilterLists.Directory.Api/Controllers/SoftwareController.cs
index 3988a2102..23fc6df70 100644
--- a/services/Directory/FilterLists.Directory.Api/Controllers/SoftwareController.cs
+++ b/services/Directory/FilterLists.Directory.Api/Controllers/SoftwareController.cs
@@ -25,9 +25,9 @@ public SoftwareController(IMemoryCache cache, IMediator mediator) : base(cache)
         /// <returns>The software that subscribes to FilterLists.</returns>
         [HttpGet]
         [ProducesResponseType(typeof(IEnumerable<GetSoftware.SoftwareVm>), StatusCodes.Status200OK)]
-        public async Task<IActionResult> Get(CancellationToken cancellationToken)
+        public Task<IActionResult> Get(CancellationToken cancellationToken)
         {
-            return await CacheGetOrCreateAsync(() => _mediator.Send(new GetSoftware.Query(), cancellationToken));
+            return CacheGetOrCreateAsync(() => _mediator.Send(new GetSoftware.Query(), cancellationToken));
         }
     }
 }
diff --git a/services/Directory/FilterLists.Directory.Api/Controllers/SyntaxesController.cs b/services/Directory/FilterLists.Directory.Api/Controllers/SyntaxesController.cs
index 4f1c47295..54aad4097 100644
--- a/services/Directory/FilterLists.Directory.Api/Controllers/SyntaxesController.cs
+++ b/services/Directory/FilterLists.Directory.Api/Controllers/SyntaxesController.cs
@@ -25,9 +25,9 @@ public SyntaxesController(IMemoryCache cache, IMediator mediator) : base(cache)
         /// <returns>The syntaxes of FilterLists.</returns>
         [HttpGet]
         [ProducesResponseType(typeof(IEnumerable<GetSyntaxes.SyntaxVm>), StatusCodes.Status200OK)]
-        public async Task<IActionResult> Get(CancellationToken cancellationToken)
+        public Task<IActionResult> Get(CancellationToken cancellationToken)
         {
-            return await CacheGetOrCreateAsync(() => _mediator.Send(new GetSyntaxes.Query(), cancellationToken));
+            return CacheGetOrCreateAsync(() => _mediator.Send(new GetSyntaxes.Query(), cancellationToken));
         }
     }
 }
diff --git a/services/Directory/FilterLists.Directory.Api/Controllers/TagsController.cs b/services/Directory/FilterLists.Directory.Api/Controllers/TagsController.cs
index d763fb746..abd35e30d 100644
--- a/services/Directory/FilterLists.Directory.Api/Controllers/TagsController.cs
+++ b/services/Directory/FilterLists.Directory.Api/Controllers/TagsController.cs
@@ -25,9 +25,9 @@ public TagsController(IMemoryCache cache, IMediator mediator) : base(cache)
         /// <returns>The tags of FilterLists.</returns>
         [HttpGet]
         [ProducesResponseType(typeof(IEnumerable<GetTags.TagVm>), StatusCodes.Status200OK)]
-        public async Task<IActionResult> Get(CancellationToken cancellationToken)
+        public Task<IActionResult> Get(CancellationToken cancellationToken)
         {
-            return await CacheGetOrCreateAsync(() => _mediator.Send(new GetTags.Query(), cancellationToken));
+            return CacheGetOrCreateAsync(() => _mediator.Send(new GetTags.Query(), cancellationToken));
         }
     }
 }