diff --git a/libs/backendless.d.ts b/libs/backendless.d.ts
index 4fe23238..a3929184 100644
--- a/libs/backendless.d.ts
+++ b/libs/backendless.d.ts
@@ -35,6 +35,12 @@ declare module __Backendless {
      **/
     function setUIState(state:string):void;
 
+    /**
+     * @public
+     * @type: Function
+     **/
+    function enablePromises():void;
+
     /**
      * @namespace Backendless.Utils
      **/
diff --git a/tests/tsd.ts b/tests/tsd.ts
index b4c5ef32..dc13edb1 100644
--- a/tests/tsd.ts
+++ b/tests/tsd.ts
@@ -17,6 +17,7 @@ function testMain() {
 
     Backendless.setUIState('state');
     Backendless.setUIState(null);
+    Backendless.enablePromises();
 }
 
 function testUtils() {