diff --git a/src/csharp/Grpc.Core/Grpc.Core.csproj b/src/csharp/Grpc.Core/Grpc.Core.csproj
index 4bf30e83c1b122abb0e5f3a41f09de25fdfbcffe..a8b7b5f00d9ed846c3635bcd4e52386892854660 100644
--- a/src/csharp/Grpc.Core/Grpc.Core.csproj
+++ b/src/csharp/Grpc.Core/Grpc.Core.csproj
@@ -86,7 +86,6 @@
     <Compile Include="Utils\BenchmarkUtil.cs" />
     <Compile Include="ChannelCredentials.cs" />
     <Compile Include="Internal\ChannelArgsSafeHandle.cs" />
-    <Compile Include="Internal\AsyncCompletion.cs" />
     <Compile Include="Internal\AsyncCallBase.cs" />
     <Compile Include="Internal\AsyncCallServer.cs" />
     <Compile Include="Internal\AsyncCall.cs" />
diff --git a/src/csharp/Grpc.Core/Internal/AsyncCompletion.cs b/src/csharp/Grpc.Core/Internal/AsyncCompletion.cs
deleted file mode 100644
index 7e86fddb4d89ef583b49babf78da6f994ae180c0..0000000000000000000000000000000000000000
--- a/src/csharp/Grpc.Core/Internal/AsyncCompletion.cs
+++ /dev/null
@@ -1,94 +0,0 @@
-#region Copyright notice and license
-
-// Copyright 2015, Google Inc.
-// All rights reserved.
-// 
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-// 
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-// 
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#endregion
-
-using System;
-using System.Diagnostics;
-using System.Runtime.CompilerServices;
-using System.Runtime.InteropServices;
-using System.Threading;
-using System.Threading.Tasks;
-using Grpc.Core.Internal;
-using Grpc.Core.Utils;
-
-namespace Grpc.Core.Internal
-{
-    /// <summary>
-    /// If error != null, there's been an error or operation has been cancelled.
-    /// </summary>
-    internal delegate void AsyncCompletionDelegate<T>(T result, Exception error);
-
-    /// <summary>
-    /// Helper for transforming AsyncCompletionDelegate into full-fledged Task.
-    /// </summary>
-    internal class AsyncCompletionTaskSource<T>
-    {
-        readonly TaskCompletionSource<T> tcs = new TaskCompletionSource<T>();
-        readonly AsyncCompletionDelegate<T> completionDelegate;
-
-        public AsyncCompletionTaskSource()
-        {
-            completionDelegate = new AsyncCompletionDelegate<T>(HandleCompletion);
-        }
-
-        public Task<T> Task
-        {
-            get
-            {
-                return tcs.Task;
-            }
-        }
-
-        public AsyncCompletionDelegate<T> CompletionDelegate
-        {
-            get
-            {
-                return completionDelegate;
-            }
-        }
-
-        private void HandleCompletion(T value, Exception error)
-        {
-            if (error == null)
-            {
-                tcs.SetResult(value);
-                return;
-            }
-            if (error is OperationCanceledException)
-            {
-                tcs.SetCanceled();
-                return;
-            }
-            tcs.SetException(error);
-        }
-    }
-}