diff --git a/nukebuild/Build.cs b/nukebuild/Build.cs
index e17bad28d7..56f61134f0 100644
--- a/nukebuild/Build.cs
+++ b/nukebuild/Build.cs
@@ -212,7 +212,8 @@ partial class Build : NukeBuild
             RunCoreTest("Avalonia.Markup.Xaml.UnitTests");
             RunCoreTest("Avalonia.Skia.UnitTests");
             RunCoreTest("Avalonia.ReactiveUI.UnitTests");
-            RunCoreTest("Avalonia.Headless.UnitTests");
+            RunCoreTest("Avalonia.Headless.NUnit.UnitTests");
+            RunCoreTest("Avalonia.Headless.XUnit.UnitTests");
         });
 
     Target RunRenderTests => _ => _
diff --git a/src/Headless/Avalonia.Headless.NUnit/Avalonia.Headless.NUnit.csproj b/src/Headless/Avalonia.Headless.NUnit/Avalonia.Headless.NUnit.csproj
index 3b8950d5d1..49f1de31f2 100644
--- a/src/Headless/Avalonia.Headless.NUnit/Avalonia.Headless.NUnit.csproj
+++ b/src/Headless/Avalonia.Headless.NUnit/Avalonia.Headless.NUnit.csproj
@@ -1,6 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;net6.0</TargetFrameworks>
+    <IsTestProject>false</IsTestProject>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/Headless/Avalonia.Headless.XUnit/Avalonia.Headless.XUnit.csproj b/src/Headless/Avalonia.Headless.XUnit/Avalonia.Headless.XUnit.csproj
index c01dc5a350..c244a1a4cd 100644
--- a/src/Headless/Avalonia.Headless.XUnit/Avalonia.Headless.XUnit.csproj
+++ b/src/Headless/Avalonia.Headless.XUnit/Avalonia.Headless.XUnit.csproj
@@ -1,6 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;net6.0</TargetFrameworks>
+    <IsTestProject>false</IsTestProject>
   </PropertyGroup>
 
   <ItemGroup>