diff --git a/CSharpExtender/CSharpExtender.csproj b/CSharpExtender/CSharpExtender.csproj
index 2ee9a4b..e283250 100644
--- a/CSharpExtender/CSharpExtender.csproj
+++ b/CSharpExtender/CSharpExtender.csproj
@@ -20,12 +20,6 @@
     <GenerateDocumentationFile>False</GenerateDocumentationFile>
   </PropertyGroup>
 
-  <ItemGroup>
-    <Compile Remove="DataAnnotations\**" />
-    <EmbeddedResource Remove="DataAnnotations\**" />
-    <None Remove="DataAnnotations\**" />
-  </ItemGroup>
-
   <ItemGroup>
     <None Include="..\LICENSE.txt">
       <Pack>True</Pack>
diff --git a/CSharpExtender/Attributes/UniqueItemsAttribute.cs b/CSharpExtender/DataAnnotations/UniqueItemsAttribute.cs
similarity index 98%
rename from CSharpExtender/Attributes/UniqueItemsAttribute.cs
rename to CSharpExtender/DataAnnotations/UniqueItemsAttribute.cs
index 0a43cdb..cf7c09e 100644
--- a/CSharpExtender/Attributes/UniqueItemsAttribute.cs
+++ b/CSharpExtender/DataAnnotations/UniqueItemsAttribute.cs
@@ -4,7 +4,7 @@
 using System.Linq;
 using System.Reflection;
 
-namespace CSharpExtender.Attributes;
+namespace CSharpExtender.DataAnnotations;
 
 [AttributeUsage(AttributeTargets.Property | AttributeTargets.Field, AllowMultiple = false)]
 public class UniqueItemsAttribute : ValidationAttribute
diff --git a/Test.CSharpExtender/Attributes/Test_UniqueItemsAttribute.cs b/Test.CSharpExtender/DataAnnotations/Test_UniqueItemsAttribute.cs
similarity index 98%
rename from Test.CSharpExtender/Attributes/Test_UniqueItemsAttribute.cs
rename to Test.CSharpExtender/DataAnnotations/Test_UniqueItemsAttribute.cs
index 3dd97f7..e49eedf 100644
--- a/Test.CSharpExtender/Attributes/Test_UniqueItemsAttribute.cs
+++ b/Test.CSharpExtender/DataAnnotations/Test_UniqueItemsAttribute.cs
@@ -1,9 +1,9 @@
-using CSharpExtender.Attributes;
+using CSharpExtender.DataAnnotations;
 using System.ComponentModel.DataAnnotations;
 
-namespace Test.CSharpExtender.Attributes;
+namespace Test.CSharpExtender.DataAnnotations;
 
-public class UniqueItemsAttributeTests
+public class Test_UniqueItemsAttribute
 {
     private static ValidationContext GetValidationContext(object instance) => new(instance);