diff --git a/README.md b/README.md
index 03eea520da8c7c863e40c3b632295f82a4ef8958..8813f88d02e90c6a53ea06733d07ac50e3b69d40 100644
--- a/README.md
+++ b/README.md
@@ -254,7 +254,7 @@ class App extends Component {
         FCM.cancelLocalNotification("UNIQ_ID_STRING");
         FCM.cancelAllLocalNotifications();
         FCM.setBadgeNumber();
-        FCM.getBadgeNumber();
+        FCM.getBadgeNumber().then(...);
     }
 }
 ```