diff --git a/CSharpEssentials.Enums/Generators/StringEnumGenerator.cs b/CSharpEssentials.Enums/Generators/StringEnumGenerator.cs
index bf03382..b3af6a5 100644
--- a/CSharpEssentials.Enums/Generators/StringEnumGenerator.cs
+++ b/CSharpEssentials.Enums/Generators/StringEnumGenerator.cs
@@ -17,7 +17,9 @@ public void Initialize(IncrementalGeneratorInitializationContext context)
                 static (node, _) => node is EnumDeclarationSyntax,
                 static (ctx, _) =>
                     (INamedTypeSymbol)ctx.TargetSymbol)
-            .Where(static symbol => symbol.DeclaredAccessibility != Accessibility.Private);
+            .Where(static symbol =>
+                symbol.DeclaredAccessibility != Accessibility.Private &&
+                symbol.ContainingType is null);
 
         context.RegisterSourceOutput(enumSymbols, static (spc, enumSymbol) =>
         {
diff --git a/CSharpEssentials.Tests/Enums/StringEnumGeneratorTests.cs b/CSharpEssentials.Tests/Enums/StringEnumGeneratorTests.cs
index a02ae3d..fb4c952 100644
--- a/CSharpEssentials.Tests/Enums/StringEnumGeneratorTests.cs
+++ b/CSharpEssentials.Tests/Enums/StringEnumGeneratorTests.cs
@@ -176,6 +176,26 @@ public void Constants_Should_Handle_Consecutive_Uppercase()
         HttpStatusExtensions.HTTPResponseSnakeCase.Should().Be("httpresponse");
         HttpStatusExtensions.HTTPResponseKebabCase.Should().Be("httpresponse");
     }
+
+    [Fact]
+    public void StringEnumGenerator_Should_Not_Generate_Extensions_When_Enum_Is_Nested_In_Class()
+    {
+        AssertExtensionsTypeIsMissing("NestedClassStatusExtensions");
+    }
+
+    [Fact]
+    public void StringEnumGenerator_Should_Not_Generate_Extensions_When_Enum_Is_Nested_In_Struct()
+    {
+        AssertExtensionsTypeIsMissing("NestedStructStatusExtensions");
+    }
+
+    private static void AssertExtensionsTypeIsMissing(string generatedTypeName)
+    {
+        typeof(StringEnumGeneratorTests).Assembly
+            .GetType($"CSharpEssentials.Tests.Enums.{generatedTypeName}")
+            .Should()
+            .BeNull();
+    }
 }
 
 [StringEnum]
@@ -201,3 +221,23 @@ internal enum HttpStatus
     NotFound,
     HTTPResponse
 }
+
+internal static class NestedEnumContainer
+{
+    [StringEnum]
+    public enum NestedClassStatus
+    {
+        Pending,
+        Completed
+    }
+}
+
+internal struct NestedEnumStructContainer
+{
+    [StringEnum]
+    public enum NestedStructStatus
+    {
+        Pending,
+        Completed
+    }
+}
diff --git a/README.MD b/README.MD
index 1c25c95..ee86c98 100644
--- a/README.MD
+++ b/README.MD
@@ -6,7 +6,7 @@
 
 [![Build](https://github.com/senrecep/CSharpEssentials/actions/workflows/build.yml/badge.svg)](https://github.com/senrecep/CSharpEssentials/actions/workflows/build.yml)
 
-[![Tests](https://img.shields.io/badge/tests-2785%20passing-brightgreen)](https://github.com/senrecep/CSharpEssentials/actions/workflows/build.yml)
+[![Tests](https://img.shields.io/badge/tests-2787%20passing-brightgreen)](https://github.com/senrecep/CSharpEssentials/actions/workflows/build.yml)
 [![NuGet](https://img.shields.io/nuget/v/CSharpEssentials.svg)](https://www.nuget.org/packages/CSharpEssentials)
 [![Downloads](https://img.shields.io/nuget/dt/CSharpEssentials.svg)](https://www.nuget.org/packages/CSharpEssentials)
 [![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](https://github.com/senrecep/CSharpEssentials/blob/main/LICENCE)