diff --git a/Octokit.Tests.Integration/Clients/TreeClientTests.cs b/Octokit.Tests.Integration/Clients/TreeClientTests.cs
index ac54e69b0b..46af32db15 100644
--- a/Octokit.Tests.Integration/Clients/TreeClientTests.cs
+++ b/Octokit.Tests.Integration/Clients/TreeClientTests.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Threading.Tasks;
 using Octokit;
 using Octokit.Tests.Integration;
@@ -144,6 +144,26 @@ public async Task CanGetACreatedTreeWithRepositoryId()
         Assert.Single(result.Tree);
     }
 
+    [IntegrationTest]
+    public async Task CanDeleteACreatedTreeWithRepositoryId()
+    {
+        var newTree = new NewTree();
+        newTree.Tree.Add(new NewTreeItem
+        {
+            Type = TreeType.Blob,
+            Path = "README.md",
+            Sha = null,
+            Mode = FileMode.File
+        });
+
+        var tree = await _fixture.Create(_context.Repository.Id, newTree);
+
+        var result = await _fixture.Get(_context.Repository.Id, tree.Sha);
+
+        Assert.NotNull(result);
+        Assert.Empty(result.Tree);
+    }
+
     public void Dispose()
     {
         _context.Dispose();
diff --git a/Octokit/Models/Request/NewTreeItem.cs b/Octokit/Models/Request/NewTreeItem.cs
index 738b21c546..83de6b6ff6 100644
--- a/Octokit/Models/Request/NewTreeItem.cs
+++ b/Octokit/Models/Request/NewTreeItem.cs
@@ -1,6 +1,7 @@
-using System.Diagnostics;
+using System.Diagnostics;
 using System.Diagnostics.CodeAnalysis;
 using System.Globalization;
+using Octokit.Internal;
 
 namespace Octokit
 {
@@ -16,9 +17,9 @@ public class NewTreeItem
         public string Path { get; set; }
 
         /// <summary>
-        /// String of the file mode - one of 100644 for file (blob), 
-        /// 100755 for executable (blob), 040000 for subdirectory (tree), 
-        /// 160000 for submodule (commit) or 
+        /// String of the file mode - one of 100644 for file (blob),
+        /// 100755 for executable (blob), 040000 for subdirectory (tree),
+        /// 160000 for submodule (commit) or
         /// 120000 for a blob that specifies the path of a symlink
         /// </summary>
         public string Mode { get; set; }
@@ -31,11 +32,12 @@ public class NewTreeItem
 
         /// <summary>
         /// The SHA for this Tree item.
+        /// If both this and Content is null it will delete the item.
         /// </summary>
-        public string Sha { get; set; }
+        [SerializeNull] public string Sha { get; set; }
 
         /// <summary>
-        /// Gets or sets the content you want this file to have. GitHub will write this blob out and use that SHA 
+        /// Gets or sets the content you want this file to have. GitHub will write this blob out and use that SHA
         /// for this entry. Use either this, or tree.sha.
         /// </summary>
         /// <value>
@@ -48,4 +50,4 @@ internal string DebuggerDisplay
             get { return string.Format(CultureInfo.InvariantCulture, "SHA: {0}, Path: {1}, Type: {2}", Sha, Path, Type); }
         }
     }
-}
\ No newline at end of file
+}