diff --git a/src/System.Waf/Samples/Writer/Writer.Presentation.Test/PresentationTest.cs b/src/System.Waf/Samples/Writer/Writer.Presentation.Test/PresentationTest.cs
index 3452871d..7cb50293 100644
--- a/src/System.Waf/Samples/Writer/Writer.Presentation.Test/PresentationTest.cs
+++ b/src/System.Waf/Samples/Writer/Writer.Presentation.Test/PresentationTest.cs
@@ -10,7 +10,7 @@
 namespace Test.Writer.Presentation
 {
     [TestClass]
-    public class PresentationTest : ApplicationsTest
+    public abstract class PresentationTest : ApplicationsTest
     {
         // List of exports which must use the real implementation instead of the mock (integration test)
         private static readonly Type[] exportNames = [