diff --git a/src/WidgetMessaging.js b/src/WidgetMessaging.js
index b0cfe963f3..30c2389b1e 100644
--- a/src/WidgetMessaging.js
+++ b/src/WidgetMessaging.js
@@ -78,6 +78,7 @@ export default class WidgetMessaging {
 
     /**
      * Tells the widget that the client is ready to handle further widget requests.
+     * @returns {Promise<*>} Resolves after the widget has acknowledged the ready message.
      */
     flagReadyToContinue() {
         return this.messageToWidget({