diff --git a/tests/rgen/Microsoft.Macios.Transformer.Tests/Attributes/StrongDictionaryDataTests.cs b/tests/rgen/Microsoft.Macios.Transformer.Tests/Attributes/StrongDictionaryDataTests.cs
index 5f08fa0dcf2..2428c0efb32 100644
--- a/tests/rgen/Microsoft.Macios.Transformer.Tests/Attributes/StrongDictionaryDataTests.cs
+++ b/tests/rgen/Microsoft.Macios.Transformer.Tests/Attributes/StrongDictionaryDataTests.cs
@@ -34,7 +34,7 @@ interface AVCapturePhotoSettingsThumbnailFormat {
 }
 ";
 
-			yield return [(Source: strongDictionary, Path: "/some/random/path.cs"), new StrongDictionaryData ("AVCapturePhotoSettingsThumbnailFormatKeys")];
+			yield return [(Source: strongDictionary, Path: path), new StrongDictionaryData ("AVCapturePhotoSettingsThumbnailFormatKeys")];
 		}
 
 		IEnumerator IEnumerable.GetEnumerator () => GetEnumerator ();
diff --git a/tests/rgen/Microsoft.Macios.Transformer.Tests/Microsoft.Macios.Transformer.Tests.csproj b/tests/rgen/Microsoft.Macios.Transformer.Tests/Microsoft.Macios.Transformer.Tests.csproj
index cd4733a2875..a284060e039 100644
--- a/tests/rgen/Microsoft.Macios.Transformer.Tests/Microsoft.Macios.Transformer.Tests.csproj
+++ b/tests/rgen/Microsoft.Macios.Transformer.Tests/Microsoft.Macios.Transformer.Tests.csproj
@@ -11,6 +11,14 @@
         <DotnetBuildDirectory>build/dotnet</DotnetBuildDirectory>
     </PropertyGroup>
 
+    <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
+      <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+    </PropertyGroup>
+
+    <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
+      <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+    </PropertyGroup>
+
     <ItemGroup>
         <PackageReference Include="coverlet.collector" Version="6.0.2"/>
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0"/>