diff --git a/Test.LightweightIocContainer/OpenGenericRegistrationTest.cs b/Test.LightweightIocContainer/OpenGenericRegistrationTest.cs
index c42ccbc..db34562 100644
--- a/Test.LightweightIocContainer/OpenGenericRegistrationTest.cs
+++ b/Test.LightweightIocContainer/OpenGenericRegistrationTest.cs
@@ -40,6 +40,7 @@ public class OpenGenericRegistrationTest
             
     }
     
+    [UsedImplicitly]
     public interface ITestFactory
     {
         ITest<T> Create<T>() where T : IConstraint, new();