diff --git a/src/Avalonia.Base/AvaloniaObjectExtensions.cs b/src/Avalonia.Base/AvaloniaObjectExtensions.cs
index 0017f955830..76138beb4d6 100644
--- a/src/Avalonia.Base/AvaloniaObjectExtensions.cs
+++ b/src/Avalonia.Base/AvaloniaObjectExtensions.cs
@@ -18,7 +18,10 @@ public static class AvaloniaObjectExtensions
         /// <returns>An <see cref="IBinding"/>.</returns>
         public static IBinding ToBinding<T>(this IObservable<T> source)
         {
-            return new BindingAdaptor(source.Select(x => (object?)x));
+            return new BindingAdaptor(
+                typeof(T).IsValueType
+                    ? source.Select(x => (object?)x)
+                    : (IObservable<object?>)source);
         }
 
         /// <summary>