diff --git a/backend/src/Squidex.Infrastructure/Queries/Json/JsonFilterVisitor.cs b/backend/src/Squidex.Infrastructure/Queries/Json/JsonFilterVisitor.cs
index 594c42c83..b55eb42d7 100644
--- a/backend/src/Squidex.Infrastructure/Queries/Json/JsonFilterVisitor.cs
+++ b/backend/src/Squidex.Infrastructure/Queries/Json/JsonFilterVisitor.cs
@@ -7,7 +7,6 @@
 
 using System.Collections.Generic;
 using System.Linq;
-using System.Text.RegularExpressions;
 using NJsonSchema;
 using Squidex.Infrastructure.Json.Objects;
 using Squidex.Infrastructure.Validation;
diff --git a/backend/src/Squidex/Areas/Api/Controllers/Rules/Models/SimulatedRuleEventsDto.cs b/backend/src/Squidex/Areas/Api/Controllers/Rules/Models/SimulatedRuleEventsDto.cs
index c9cad3a73..04386eb65 100644
--- a/backend/src/Squidex/Areas/Api/Controllers/Rules/Models/SimulatedRuleEventsDto.cs
+++ b/backend/src/Squidex/Areas/Api/Controllers/Rules/Models/SimulatedRuleEventsDto.cs
@@ -1,15 +1,13 @@
 // ==========================================================================
 //  Squidex Headless CMS
 // ==========================================================================
-//  Copyright (c) Squidex UG (haftungsbeschränkt)
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
 using System.Collections.Generic;
 using System.Linq;
-using Squidex.Domain.Apps.Entities.Rules;
 using Squidex.Domain.Apps.Entities.Rules.Runner;
-using Squidex.Infrastructure;
 using Squidex.Infrastructure.Validation;
 using Squidex.Web;
 
diff --git a/backend/tests/Squidex.Domain.Apps.Entities.Tests/Assets/DomainObject/AssetDomainObjectGrainTests.cs b/backend/tests/Squidex.Domain.Apps.Entities.Tests/Assets/DomainObject/AssetDomainObjectGrainTests.cs
index 4311e5a17..226baf661 100644
--- a/backend/tests/Squidex.Domain.Apps.Entities.Tests/Assets/DomainObject/AssetDomainObjectGrainTests.cs
+++ b/backend/tests/Squidex.Domain.Apps.Entities.Tests/Assets/DomainObject/AssetDomainObjectGrainTests.cs
@@ -10,7 +10,6 @@ using FakeItEasy;
 using Squidex.Infrastructure.Orleans;
 using Xunit;
 
-#pragma warning disable RECS0026 // Possible unassigned object created by 'new'
 #pragma warning disable CA1806 // Do not ignore method results
 
 namespace Squidex.Domain.Apps.Entities.Assets.DomainObject
diff --git a/backend/tests/Squidex.Domain.Apps.Entities.Tests/Assets/DomainObject/AssetFolderDomainObjectGrainTests.cs b/backend/tests/Squidex.Domain.Apps.Entities.Tests/Assets/DomainObject/AssetFolderDomainObjectGrainTests.cs
index badc29dc4..790fa50ce 100644
--- a/backend/tests/Squidex.Domain.Apps.Entities.Tests/Assets/DomainObject/AssetFolderDomainObjectGrainTests.cs
+++ b/backend/tests/Squidex.Domain.Apps.Entities.Tests/Assets/DomainObject/AssetFolderDomainObjectGrainTests.cs
@@ -10,7 +10,6 @@ using FakeItEasy;
 using Squidex.Infrastructure.Orleans;
 using Xunit;
 
-#pragma warning disable RECS0026 // Possible unassigned object created by 'new'
 #pragma warning disable CA1806 // Do not ignore method results
 
 namespace Squidex.Domain.Apps.Entities.Assets.DomainObject
diff --git a/backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/DomainObject/ContentDomainObjectGrainTests.cs b/backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/DomainObject/ContentDomainObjectGrainTests.cs
index b0645752a..f6ce73dac 100644
--- a/backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/DomainObject/ContentDomainObjectGrainTests.cs
+++ b/backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/DomainObject/ContentDomainObjectGrainTests.cs
@@ -10,7 +10,6 @@ using FakeItEasy;
 using Squidex.Infrastructure.Orleans;
 using Xunit;
 
-#pragma warning disable RECS0026 // Possible unassigned object created by 'new'
 #pragma warning disable CA1806 // Do not ignore method results
 
 namespace Squidex.Domain.Apps.Entities.Contents.DomainObject
diff --git a/backend/tests/Squidex.Infrastructure.Tests/Json/Newtonsoft/ConverterContractResolverTests.cs b/backend/tests/Squidex.Infrastructure.Tests/Json/Newtonsoft/ConverterContractResolverTests.cs
index 9065912ca..257e19f5f 100644
--- a/backend/tests/Squidex.Infrastructure.Tests/Json/Newtonsoft/ConverterContractResolverTests.cs
+++ b/backend/tests/Squidex.Infrastructure.Tests/Json/Newtonsoft/ConverterContractResolverTests.cs
@@ -78,7 +78,6 @@ namespace Squidex.Infrastructure.Json.Newtonsoft
             serializerSettings.Converters.Add(new TodayConverter());
 
             var serializer = new NewtonsoftJsonSerializer(serializerSettings);
-
             var serialized = serializer.Deserialize<Instant>(serializer.Serialize(value, true))!;
 
             Assert.Equal(value, serialized);
diff --git a/backend/tests/Squidex.Web.Tests/Pipeline/UsageMiddlewareTests.cs b/backend/tests/Squidex.Web.Tests/Pipeline/UsageMiddlewareTests.cs
index 5d7a6bf7d..4c68382d0 100644
--- a/backend/tests/Squidex.Web.Tests/Pipeline/UsageMiddlewareTests.cs
+++ b/backend/tests/Squidex.Web.Tests/Pipeline/UsageMiddlewareTests.cs
@@ -16,8 +16,6 @@ using Squidex.Infrastructure;
 using Squidex.Infrastructure.UsageTracking;
 using Xunit;
 
-#pragma warning disable RECS0018 // Comparison of floating point numbers with equality operator
-
 namespace Squidex.Web.Pipeline
 {
     public class UsageMiddlewareTests
@@ -220,4 +218,4 @@ namespace Squidex.Web.Pipeline
                 .MustHaveHappened();
         }
     }
-}
\ No newline at end of file
+}