diff --git a/LibGit2Sharp/ObjectDatabase.cs b/LibGit2Sharp/ObjectDatabase.cs
index 3a4ebcdb6..55a1cda6e 100644
--- a/LibGit2Sharp/ObjectDatabase.cs
+++ b/LibGit2Sharp/ObjectDatabase.cs
@@ -202,7 +202,7 @@ public virtual ObjectId Write<T>(Stream stream, long numberOfBytesToConsume) whe
                 throw new ArgumentException("The stream cannot be read from.", "stream");
             }
 
-            using (var odbStream = Proxy.git_odb_open_wstream(handle, numberOfBytesToConsume, GitObjectType.Blob))
+            using (var odbStream = Proxy.git_odb_open_wstream(handle, numberOfBytesToConsume, GitObject.TypeToGitKindMap[typeof(T)]))
             {
                 var buffer = new byte[4 * 1024];
                 long totalRead = 0;