diff --git a/jquery/jquery.d.ts b/jquery/jquery.d.ts
index 558453ab35..5928165b3c 100644
--- a/jquery/jquery.d.ts
+++ b/jquery/jquery.d.ts
@@ -482,7 +482,7 @@ interface JQueryDeferred<T> extends JQueryPromise<T> {
      * @param value First argument passed to doneCallbacks.
      * @param args Optional subsequent arguments that are passed to the doneCallbacks.
      */
-    resolve(value: T, ...args: any[]): JQueryDeferred<T>;
+    resolve(value?: T, ...args: any[]): JQueryDeferred<T>;
 
     // COMMENTED OUT AS MAKES resolve LESS USEFUL - PERHAPS REMOVE ENTIRELY LATER
     /**