diff --git a/src/OrchardCore.Modules/OrchardCore.Facebook/Filters/FBInitFilter.cs b/src/OrchardCore.Modules/OrchardCore.Facebook/Filters/FBInitFilter.cs
index 7618d431c25..9ef00fa13d9 100644
--- a/src/OrchardCore.Modules/OrchardCore.Facebook/Filters/FBInitFilter.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Facebook/Filters/FBInitFilter.cs
@@ -29,7 +29,7 @@ public async Task OnResultExecutionAsync(ResultExecutingContext context, ResultE
             {
                 var site = (await _siteService.GetSiteSettingsAsync());
                 var settings = site.As<FacebookSettings>();
-                if (!String.IsNullOrWhiteSpace(settings?.AppId))
+                if (!string.IsNullOrWhiteSpace(settings?.AppId))
                 {
                     if (settings.FBInit)
                     {
diff --git a/src/OrchardCore.Modules/OrchardCore.Workflows/Http/Filters/WorkflowActionFilter.cs b/src/OrchardCore.Modules/OrchardCore.Workflows/Http/Filters/WorkflowActionFilter.cs
index 9da4c5d610d..29e8158603b 100644
--- a/src/OrchardCore.Modules/OrchardCore.Workflows/Http/Filters/WorkflowActionFilter.cs
+++ b/src/OrchardCore.Modules/OrchardCore.Workflows/Http/Filters/WorkflowActionFilter.cs
@@ -44,13 +44,13 @@ public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionE
 
             if (workflowTypeEntries.Any())
             {
-                var workflowTypeIds = workflowTypeEntries.Select(x => Int64.Parse(x.WorkflowId)).ToList();
+                var workflowTypeIds = workflowTypeEntries.Select(x => long.Parse(x.WorkflowId)).ToList();
                 var workflowTypes = (await _workflowTypeStore.GetAsync(workflowTypeIds)).ToDictionary(x => x.Id);
                 var correlationId = routeValues.GetValue<string>("correlationid");
 
                 foreach (var entry in workflowTypeEntries)
                 {
-                    if (workflowTypes.TryGetValue(Int64.Parse(entry.WorkflowId), out var workflowType))
+                    if (workflowTypes.TryGetValue(long.Parse(entry.WorkflowId), out var workflowType))
                     {
                         var activity = workflowType.Activities.Single(x => x.ActivityId == entry.ActivityId);
 
diff --git a/src/OrchardCore/OrchardCore.ResourceManagement.Abstractions/RequireSettings.cs b/src/OrchardCore/OrchardCore.ResourceManagement.Abstractions/RequireSettings.cs
index c01c2eb60c0..ab4cf9c069c 100644
--- a/src/OrchardCore/OrchardCore.ResourceManagement.Abstractions/RequireSettings.cs
+++ b/src/OrchardCore/OrchardCore.ResourceManagement.Abstractions/RequireSettings.cs
@@ -82,7 +82,7 @@ public RequireSettings AtLocation(ResourceLocation location)
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public RequireSettings UseCulture(string cultureName)
         {
-            if (!String.IsNullOrEmpty(cultureName))
+            if (!string.IsNullOrEmpty(cultureName))
             {
                 Culture = cultureName;
             }
diff --git a/src/Templates/OrchardCore.ProjectTemplates/content/OrchardCore.Templates.Cms.Module/Settings/MyTestPartSettingsDisplayDriver.cs b/src/Templates/OrchardCore.ProjectTemplates/content/OrchardCore.Templates.Cms.Module/Settings/MyTestPartSettingsDisplayDriver.cs
index ed6a53e9519..bea241dbf06 100644
--- a/src/Templates/OrchardCore.ProjectTemplates/content/OrchardCore.Templates.Cms.Module/Settings/MyTestPartSettingsDisplayDriver.cs
+++ b/src/Templates/OrchardCore.ProjectTemplates/content/OrchardCore.Templates.Cms.Module/Settings/MyTestPartSettingsDisplayDriver.cs
@@ -12,7 +12,7 @@ public class MyTestPartSettingsDisplayDriver : ContentTypePartDefinitionDisplayD
     {
         public override IDisplayResult Edit(ContentTypePartDefinition contentTypePartDefinition, IUpdateModel updater)
         {
-            if (!String.Equals(nameof(MyTestPart), contentTypePartDefinition.PartDefinition.Name))
+            if (!string.Equals(nameof(MyTestPart), contentTypePartDefinition.PartDefinition.Name))
             {
                 return null;
             }
@@ -28,7 +28,7 @@ public override IDisplayResult Edit(ContentTypePartDefinition contentTypePartDef
 
         public override async Task<IDisplayResult> UpdateAsync(ContentTypePartDefinition contentTypePartDefinition, UpdateTypePartEditorContext context)
         {
-            if (!String.Equals(nameof(MyTestPart), contentTypePartDefinition.PartDefinition.Name))
+            if (!string.Equals(nameof(MyTestPart), contentTypePartDefinition.PartDefinition.Name))
             {
                 return null;
             }
diff --git a/test/OrchardCore.Abstractions.Tests/Modules/Manifest/FeatureAttributeTests.Attribute.cs b/test/OrchardCore.Abstractions.Tests/Modules/Manifest/FeatureAttributeTests.Attribute.cs
index 93d5f2645d9..3b75b2ff89b 100644
--- a/test/OrchardCore.Abstractions.Tests/Modules/Manifest/FeatureAttributeTests.Attribute.cs
+++ b/test/OrchardCore.Abstractions.Tests/Modules/Manifest/FeatureAttributeTests.Attribute.cs
@@ -245,7 +245,7 @@ protected readonly struct RenderKeyValuePair
             /// </summary>
             /// <param name="_"></param>
             /// <returns></returns>
-            /// <remarks>Given value may be Null, Nullable, Sring, or Boolean. Otherwise,
+            /// <remarks>Given value may be Null, Nullable, String, or Boolean. Otherwise,
             /// makes a best effort to convert directly to string.</remarks>
             private static string DefaultRender(object _)
             {