diff --git a/src/net/Qml.Net.Tests/Qml/MvvmInteropBehaviorTests.cs b/src/net/Qml.Net.Tests/Qml/MvvmInteropBehaviorTests.cs
index 4653a5e3..64036b23 100644
--- a/src/net/Qml.Net.Tests/Qml/MvvmInteropBehaviorTests.cs
+++ b/src/net/Qml.Net.Tests/Qml/MvvmInteropBehaviorTests.cs
@@ -35,7 +35,7 @@ namespace Qml.Net.Tests.Qml
             ViewModel.CustomNotifyOnlyIntProperty = newValue;
         }
 
-        public bool? TestResult { get; set; } = false;
+        public bool? TestResult { get; set; } = null;
     }
 
     public class ViewModel : INotifyPropertyChanged