diff --git a/props/package.props b/props/package.props
index a0d9a8d8..4c833501 100644
--- a/props/package.props
+++ b/props/package.props
@@ -9,6 +9,7 @@
 
   <PropertyGroup Label="Package info">
     <IsPackable>true</IsPackable>
+    <EnablePackageValidation>true</EnablePackageValidation>
     <PackageIcon>package-icon.png</PackageIcon>
     <PackageIconUrl>https://github.com/Qowaiv/Qowaiv/blob/master/design/package-icon.png</PackageIconUrl>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
diff --git a/specs/Qowaiv.Specs/Percentage_specs.cs b/specs/Qowaiv.Specs/Percentage_specs.cs
index 8acbe4ee..6b2a7206 100644
--- a/specs/Qowaiv.Specs/Percentage_specs.cs
+++ b/specs/Qowaiv.Specs/Percentage_specs.cs
@@ -1,6 +1,4 @@
-using FluentAssertions;
-
-namespace Percentage_specs;
+namespace Percentage_specs;
 
 public class Is_valid_for
 {
diff --git a/src/Qowaiv.Data.SqlClient/Qowaiv.Data.SqlClient.csproj b/src/Qowaiv.Data.SqlClient/Qowaiv.Data.SqlClient.csproj
index 7f18a23b..555ae3c5 100644
--- a/src/Qowaiv.Data.SqlClient/Qowaiv.Data.SqlClient.csproj
+++ b/src/Qowaiv.Data.SqlClient/Qowaiv.Data.SqlClient.csproj
@@ -38,8 +38,8 @@ v6.0.0
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\Qowaiv\Qowaiv.csproj" />
     <ProjectReference Include="..\..\src\Qowaiv.Diagnostics.Contracts\Qowaiv.Diagnostics.Contracts.csproj" PrivateAssets="all" IncludeAssets="compiler" />
+    <ProjectReference Include="..\Qowaiv\Qowaiv.csproj" />
   </ItemGroup>
 
 </Project>
diff --git a/src/Qowaiv/Identifiers/Id.cs b/src/Qowaiv/Identifiers/Id.cs
index 6594375e..24749f32 100644
--- a/src/Qowaiv/Identifiers/Id.cs
+++ b/src/Qowaiv/Identifiers/Id.cs
@@ -249,7 +249,6 @@ void IXmlSerializable.WriteXml(XmlWriter writer)
     /// The format provider.
     /// </param>
     /// <returns>
-    /// <returns>
     /// The parsed identifier.
     /// </returns>
     /// <exception cref="FormatException">