diff --git a/EnvelopeGenerator.Tests/Domain/ConstantsTests.cs b/EnvelopeGenerator.Tests/Domain/ConstantsTests.cs
deleted file mode 100644
index 23effd3e..00000000
--- a/EnvelopeGenerator.Tests/Domain/ConstantsTests.cs
+++ /dev/null
@@ -1,17 +0,0 @@
-using EnvelopeGenerator.Domain.Constants;
-using NUnit.Framework;
-
-namespace EnvelopeGenerator.Tests.Domain;
-
-public class ConstantsTests
-{
-    [TestCase(EnvelopeSigningType.ReadAndSign, EnvelopeSigningType.ReadAndSign)]
-    [TestCase(EnvelopeSigningType.WetSignature, EnvelopeSigningType.WetSignature)]
-    [TestCase((EnvelopeSigningType)5, EnvelopeSigningType.WetSignature)]
-    public void Normalize_ReturnsExpectedValue(EnvelopeSigningType input, EnvelopeSigningType expected)
-    {
-        var normalized = input.Normalize();
-
-        Assert.That(normalized, Is.EqualTo(expected));
-    }
-}
diff --git a/EnvelopeGenerator.Tests/EnvelopeGenerator.Tests.csproj b/EnvelopeGenerator.Tests/EnvelopeGenerator.Tests.csproj
index e1d7f360..43fbe1cb 100644
--- a/EnvelopeGenerator.Tests/EnvelopeGenerator.Tests.csproj
+++ b/EnvelopeGenerator.Tests/EnvelopeGenerator.Tests.csproj
@@ -53,4 +53,8 @@
     </None>
   </ItemGroup>
 
+  <ItemGroup>
+    <Folder Include="Domain\" />
+  </ItemGroup>
+
 </Project>