diff --git a/Rx.NET/Source/src/System.Reactive/Linq/Observable/SingleOrDefaultAsync.cs b/Rx.NET/Source/src/System.Reactive/Linq/Observable/SingleOrDefaultAsync.cs
index dd308cb0cd..fe67ea5854 100644
--- a/Rx.NET/Source/src/System.Reactive/Linq/Observable/SingleOrDefaultAsync.cs
+++ b/Rx.NET/Source/src/System.Reactive/Linq/Observable/SingleOrDefaultAsync.cs
@@ -27,8 +27,6 @@ internal sealed class _ : IdentitySink<TSource>
                 public _(IObserver<TSource> observer)
                     : base(observer)
                 {
-                    _value = default(TSource);
-                    _seenValue = false;
                 }
 
                 public override void OnNext(TSource value)
@@ -76,9 +74,6 @@ public _(Func<TSource, bool> predicate, IObserver<TSource> observer)
                     : base(observer)
                 {
                     _predicate = predicate;
-
-                    _value = default(TSource);
-                    _seenValue = false;
                 }
 
                 public override void OnNext(TSource value)