diff --git a/README.md b/README.md
index 289409b..3d4c9c0 100644
--- a/README.md
+++ b/README.md
@@ -160,7 +160,7 @@ RateMyApp rateMyApp = RateMyApp(
 void initState() {
   super.initState();
 
-  WidgetsBinding.instance?.addPostFrameCallback((_) async {
+  WidgetsBinding.instance.addPostFrameCallback((_) async {
     await rateMyApp.init();
     if (mounted && rateMyApp.shouldOpenDialog) {  
       rateMyApp.showRateDialog(context);