diff --git a/src/System.Management.Automation/engine/Modules/ModuleCmdletBase.cs b/src/System.Management.Automation/engine/Modules/ModuleCmdletBase.cs
index 44d7a373395..d4155c60c82 100644
--- a/src/System.Management.Automation/engine/Modules/ModuleCmdletBase.cs
+++ b/src/System.Management.Automation/engine/Modules/ModuleCmdletBase.cs
@@ -334,7 +334,7 @@ internal bool LoadUsingModulePath(PSModuleInfo parentModule, bool found, IEnumer
                 foreach (string folder in Directory.EnumerateDirectories(path))
                 {
                     string moduleName = Path.GetFileName(folder);
-                    if (string.Compare(moduleName, fileBaseName, StringComparison.OrdinalIgnoreCase) == 0)
+                    if (string.Equals(moduleName, fileBaseName, StringComparison.OrdinalIgnoreCase))
                     {
                         fileBaseName = moduleName;
 #endif
@@ -3531,7 +3531,7 @@ private static void PropagateExportedTypesFromNestedModulesToRootModuleScope(Imp
                 if (nestedModule != null)
                 {
                     var exportedTypes = nestedModule.GetExportedTypeDefinitions();
-                    if (exportedTypes != null && exportedTypes.Count != 0)
+                    if (exportedTypes != null && exportedTypes.Count > 0)
                     {
                         foreach (var t in exportedTypes)
                         {
diff --git a/src/System.Management.Automation/engine/Subsystem/SubsystemManager.cs b/src/System.Management.Automation/engine/Subsystem/SubsystemManager.cs
index 1e32436e6da..81a27f61279 100644
--- a/src/System.Management.Automation/engine/Subsystem/SubsystemManager.cs
+++ b/src/System.Management.Automation/engine/Subsystem/SubsystemManager.cs
@@ -217,7 +217,7 @@ private static void RegisterSubsystem(SubsystemInfo subsystemInfo, ISubsystem pr
                     nameof(proxy));
             }
 
-            if (subsystemInfo.RequiredCmdlets.Any() || subsystemInfo.RequiredFunctions.Any())
+            if (subsystemInfo.RequiredCmdlets.Count > 0 || subsystemInfo.RequiredFunctions.Count > 0)
             {
                 // Process 'proxy.CmdletImplementationAssembly' and 'proxy.FunctionsToDefine'
                 // Functions are added to global scope.
@@ -265,7 +265,7 @@ public static void UnregisterSubsystem(SubsystemKind kind, Guid id)
 
         private static void UnregisterSubsystem(SubsystemInfo subsystemInfo, Guid id)
         {
-            if (subsystemInfo.RequiredCmdlets.Any() || subsystemInfo.RequiredFunctions.Any())
+            if (subsystemInfo.RequiredCmdlets.Count > 0 || subsystemInfo.RequiredFunctions.Count > 0)
             {
                 throw new NotSupportedException("NotSupported yet: unregister subsystem that introduced new cmdlets/functions.");
             }
diff --git a/src/System.Management.Automation/engine/parser/AstVisitor.cs b/src/System.Management.Automation/engine/parser/AstVisitor.cs
index a20ea4a5ce8..45cdb438008 100644
--- a/src/System.Management.Automation/engine/parser/AstVisitor.cs
+++ b/src/System.Management.Automation/engine/parser/AstVisitor.cs
@@ -425,7 +425,7 @@ internal static bool Contains(Ast ast, Func<Ast, bool> predicate, bool searchNes
 
             var searcher = new AstSearcher(predicate, stopOnFirst: true, searchNestedScriptBlocks: searchNestedScriptBlocks);
             ast.InternalVisit(searcher);
-            return searcher.Results.Any();
+            return searcher.Results.Count > 0;
         }
 
         internal static bool IsUsingDollarInput(Ast ast)
diff --git a/src/System.Management.Automation/utils/EncodingUtils.cs b/src/System.Management.Automation/utils/EncodingUtils.cs
index 33ff3c7f598..e9802488006 100644
--- a/src/System.Management.Automation/utils/EncodingUtils.cs
+++ b/src/System.Management.Automation/utils/EncodingUtils.cs
@@ -64,7 +64,7 @@ internal static Encoding Convert(Cmdlet cmdlet, string encoding)
             if (encodingMap.TryGetValue(encoding, out foundEncoding))
             {
                 // Write a warning if using utf7 as it is obsolete in .NET5
-                if (string.Compare(encoding, Utf7, StringComparison.OrdinalIgnoreCase) == 0)
+                if (string.Equals(encoding, Utf7, StringComparison.OrdinalIgnoreCase))
                 {
                     cmdlet.WriteWarning(PathUtilsStrings.Utf7EncodingObsolete);
                 }