diff --git a/src/System.Runtime/ref/System.Runtime.cs b/src/System.Runtime/ref/System.Runtime.cs
index 6483680e8bab..5b6303c39f54 100644
--- a/src/System.Runtime/ref/System.Runtime.cs
+++ b/src/System.Runtime/ref/System.Runtime.cs
@@ -7978,8 +7978,6 @@ public void SetObserved() { }
         public TResult Result { get { throw null; } }
         public System.Threading.Tasks.Task<TResult> AsTask() { throw null; }
         public System.Runtime.CompilerServices.ConfiguredValueTaskAwaitable<TResult> ConfigureAwait(bool continueOnCapturedContext) { throw null; }
-        [System.ComponentModel.EditorBrowsableAttribute((System.ComponentModel.EditorBrowsableState)(1))]
-        public static System.Runtime.CompilerServices.AsyncValueTaskMethodBuilder<TResult> CreateAsyncMethodBuilder() { throw null; }
         public override bool Equals(object obj) { throw null; }
         public bool Equals(System.Threading.Tasks.ValueTask<TResult> other) { throw null; }
         public System.Runtime.CompilerServices.ValueTaskAwaiter<TResult> GetAwaiter() { throw null; }
diff --git a/src/System.Threading.Tasks.Extensions/ref/System.Threading.Tasks.Extensions.cs b/src/System.Threading.Tasks.Extensions/ref/System.Threading.Tasks.Extensions.cs
index 2b8bd30e9166..f5787932d27f 100644
--- a/src/System.Threading.Tasks.Extensions/ref/System.Threading.Tasks.Extensions.cs
+++ b/src/System.Threading.Tasks.Extensions/ref/System.Threading.Tasks.Extensions.cs
@@ -62,8 +62,6 @@ namespace System.Threading.Tasks
         public TResult Result { get { throw null; } }
         public System.Threading.Tasks.Task<TResult> AsTask() { throw null; }
         public System.Runtime.CompilerServices.ConfiguredValueTaskAwaitable<TResult> ConfigureAwait(bool continueOnCapturedContext) { throw null; }
-        [System.ComponentModel.EditorBrowsableAttribute((System.ComponentModel.EditorBrowsableState)(1))]
-        public static System.Runtime.CompilerServices.AsyncValueTaskMethodBuilder<TResult> CreateAsyncMethodBuilder() { throw null; }
         public override bool Equals(object obj) { throw null; }
         public bool Equals(System.Threading.Tasks.ValueTask<TResult> other) { throw null; }
         public System.Runtime.CompilerServices.ValueTaskAwaiter<TResult> GetAwaiter() { throw null; }
diff --git a/src/System.Threading.Tasks.Extensions/tests/AsyncValueTaskMethodBuilderTests.cs b/src/System.Threading.Tasks.Extensions/tests/AsyncValueTaskMethodBuilderTests.cs
index 94827c91b5d2..1ecefdf6fa4a 100644
--- a/src/System.Threading.Tasks.Extensions/tests/AsyncValueTaskMethodBuilderTests.cs
+++ b/src/System.Threading.Tasks.Extensions/tests/AsyncValueTaskMethodBuilderTests.cs
@@ -13,14 +13,14 @@ public class AsyncValueTaskMethodBuilderTests
         [Fact]
         public void Create_ReturnsDefaultInstance()
         {
-            AsyncValueTaskMethodBuilder<int> b = ValueTask<int>.CreateAsyncMethodBuilder();
+            AsyncValueTaskMethodBuilder<int> b = default;
             Assert.Equal(default(AsyncValueTaskMethodBuilder<int>), b); // implementation detail being verified
         }
 
         [Fact]
         public void SetResult_BeforeAccessTask_ValueTaskContainsValue()
         {
-            AsyncValueTaskMethodBuilder<int> b = ValueTask<int>.CreateAsyncMethodBuilder();
+            AsyncValueTaskMethodBuilder<int> b = default;
             b.SetResult(42);
             ValueTask<int> vt = b.Task;
             Assert.True(vt.IsCompletedSuccessfully);
@@ -31,7 +31,7 @@ public void SetResult_BeforeAccessTask_ValueTaskContainsValue()
         [Fact]
         public void SetResult_AfterAccessTask_ValueTaskContainsValue()
         {
-            AsyncValueTaskMethodBuilder<int> b = ValueTask<int>.CreateAsyncMethodBuilder();
+            AsyncValueTaskMethodBuilder<int> b = default;
             ValueTask<int> vt = b.Task;
             b.SetResult(42);
             Assert.True(vt.IsCompletedSuccessfully);
@@ -42,7 +42,7 @@ public void SetResult_AfterAccessTask_ValueTaskContainsValue()
         [Fact]
         public void SetException_BeforeAccessTask_FaultsTask()
         {
-            AsyncValueTaskMethodBuilder<int> b = ValueTask<int>.CreateAsyncMethodBuilder();
+            AsyncValueTaskMethodBuilder<int> b = default;
             var e = new FormatException();
             b.SetException(e);
             ValueTask<int> vt = b.Task;
@@ -53,7 +53,7 @@ public void SetException_BeforeAccessTask_FaultsTask()
         [Fact]
         public void SetException_AfterAccessTask_FaultsTask()
         {
-            AsyncValueTaskMethodBuilder<int> b = ValueTask<int>.CreateAsyncMethodBuilder();
+            AsyncValueTaskMethodBuilder<int> b = default;
             var e = new FormatException();
             ValueTask<int> vt = b.Task;
             b.SetException(e);
@@ -64,7 +64,7 @@ public void SetException_AfterAccessTask_FaultsTask()
         [Fact]
         public void SetException_OperationCanceledException_CancelsTask()
         {
-            AsyncValueTaskMethodBuilder<int> b = ValueTask<int>.CreateAsyncMethodBuilder();
+            AsyncValueTaskMethodBuilder<int> b = default;
             var e = new OperationCanceledException();
             ValueTask<int> vt = b.Task;
             b.SetException(e);
@@ -75,7 +75,7 @@ public void SetException_OperationCanceledException_CancelsTask()
         [Fact]
         public void Start_InvokesMoveNext()
         {
-            AsyncValueTaskMethodBuilder<int> b = ValueTask<int>.CreateAsyncMethodBuilder();
+            AsyncValueTaskMethodBuilder<int> b = default;
             int invokes = 0;
             var dsm = new DelegateStateMachine { MoveNextDelegate = () => invokes++ };
             b.Start(ref dsm);
@@ -89,7 +89,7 @@ public void Start_InvokesMoveNext()
         [InlineData(2, true)]
         public void AwaitOnCompleted_ForcesTaskCreation(int numAwaits, bool awaitUnsafe)
         {
-            AsyncValueTaskMethodBuilder<int> b = ValueTask<int>.CreateAsyncMethodBuilder();
+            AsyncValueTaskMethodBuilder<int> b = default;
 
             var dsm = new DelegateStateMachine();
             TaskAwaiter<int> t = new TaskCompletionSource<int>().Task.GetAwaiter();
@@ -117,7 +117,7 @@ public void AwaitOnCompleted_ForcesTaskCreation(int numAwaits, bool awaitUnsafe)
         [ActiveIssue("https://github.com/dotnet/corefx/issues/22506", TargetFrameworkMonikers.UapAot)]
         public void SetStateMachine_InvalidArgument_ThrowsException()
         {
-            AsyncValueTaskMethodBuilder<int> b = ValueTask<int>.CreateAsyncMethodBuilder();
+            AsyncValueTaskMethodBuilder<int> b = default;
             AssertExtensions.Throws<ArgumentNullException>("stateMachine", () => b.SetStateMachine(null));
         }
 
@@ -144,7 +144,7 @@ public void Start_ExecutionContextChangesInMoveNextDontFlowOut()
             Assert.Equal(2, al.Value);
             Assert.Equal(2, calls);
 
-            AsyncValueTaskMethodBuilder<int> b = ValueTask<int>.CreateAsyncMethodBuilder();
+            AsyncValueTaskMethodBuilder<int> b = default;
             b.Start(ref dsm);
             Assert.Equal(2, al.Value); // change should not be visible
             Assert.Equal(3, calls);