diff --git a/Implab/PromiseT.cs b/Implab/PromiseT.cs
--- a/Implab/PromiseT.cs
+++ b/Implab/PromiseT.cs
@@ -41,9 +41,7 @@ namespace Implab {
     public class Promise<T> : AbstractPromise<T>, IDeferred<T> {
 
         public static IPromise<T> FromResult(T value) {
-            var p = new Promise<T>();
-            p.Resolve(value);
-            return p;
+            return new SuccessPromise<T>(value);
         }
 
         public static IPromise<T> FromException(Exception error) {