diff --git a/src/Avalonia.Headless/AvaloniaHeadlessPlatform.cs b/src/Avalonia.Headless/AvaloniaHeadlessPlatform.cs
index 319b0da7bf..90749caf6f 100644
--- a/src/Avalonia.Headless/AvaloniaHeadlessPlatform.cs
+++ b/src/Avalonia.Headless/AvaloniaHeadlessPlatform.cs
@@ -43,6 +43,8 @@ namespace Avalonia.Headless
                 _framesPerSecond = framesPerSecond;
             }
 
+            public override bool RunsInBackground => false;
+
             public void ForceTick() => _forceTick?.Invoke();
         }