diff --git a/src/NetArchTest.Rules/Dependencies/TypeDefinitionCheckingResult.cs b/src/NetArchTest.Rules/Dependencies/TypeDefinitionCheckingResult.cs
index 1143e39..37b9881 100644
--- a/src/NetArchTest.Rules/Dependencies/TypeDefinitionCheckingResult.cs
+++ b/src/NetArchTest.Rules/Dependencies/TypeDefinitionCheckingResult.cs
@@ -3,6 +3,7 @@
     using System;
     using System.Collections.Generic;
     using System.Linq;
+    using System.Runtime.CompilerServices;
     using Mono.Cecil;
     using NetArchTest.Rules.Dependencies.DataStructures;
 
@@ -105,6 +106,10 @@ public void CheckDependency(TypeReference dependency)
                 if (_hasDependencyFromOutsideOfSearchTree == false)
                 {
                     bool isGlobalAnonymousCompilerGeneratedType = String.IsNullOrEmpty(dependency.Namespace) && dependency.Name.StartsWith("<>");
+                    if (dependency is TypeDefinition typeDefinition)
+                    {
+                        isGlobalAnonymousCompilerGeneratedType |= typeDefinition.CustomAttributes.Any(x => x?.AttributeType?.FullName == typeof(CompilerGeneratedAttribute).FullName);
+                    }
                     if (!isGlobalAnonymousCompilerGeneratedType)
                     {
                         _hasDependencyFromOutsideOfSearchTree = true;
diff --git a/src/NetArchTest.Rules/Types.cs b/src/NetArchTest.Rules/Types.cs
index 9647026..6841e9d 100644
--- a/src/NetArchTest.Rules/Types.cs
+++ b/src/NetArchTest.Rules/Types.cs
@@ -21,7 +21,7 @@ public sealed class Types
 
         /// <summary> The list of namespaces to exclude from the current domain. </summary>
         private static readonly List<string> _exclusionList = new List<string>
-        { "System", "Microsoft", "Mono.Cecil", "netstandard", "NetArchTest.Rules", "<Module>", "xunit" };
+        { "System", "Microsoft", "Mono.Cecil", "netstandard", "NetArchTest.Rules", "<Module>", "xunit", "<PrivateImplementationDetails>" };
 
         private static readonly NamespaceTree _exclusionTree = new NamespaceTree(_exclusionList);
 
diff --git a/test/NetArchTest.TestStructure/Dependencies/TypeOfSearch/Classes.cs b/test/NetArchTest.TestStructure/Dependencies/TypeOfSearch/Classes.cs
index ed5f1ae..cd80bd1 100644
--- a/test/NetArchTest.TestStructure/Dependencies/TypeOfSearch/Classes.cs
+++ b/test/NetArchTest.TestStructure/Dependencies/TypeOfSearch/Classes.cs
@@ -18,6 +18,22 @@ public static void LetUsCreateSomeAnonymousTypes()
                          join z in numbers on x equals z
                          select (x, z);
         }
+
+
+        public static int LetUsUseSwitchExpressionWithMoreThan7(string element)
+        {            
+            return element switch
+            {
+                "one" => 1,
+                "two" => 2,
+                "three" => 3,
+                "four" => 4,
+                "five" => 5,
+                "six" => 6,
+                "seven" => 7,
+                _ => 8,
+            };
+        }
     }
 
     public class Class_B