diff --git a/lib/learn.dart b/lib/learn.dart
index 320f4ca..e836c5e 100644
--- a/lib/learn.dart
+++ b/lib/learn.dart
@@ -3,6 +3,7 @@ import 'dart:math';
 import 'package:flutter/material.dart';
 import 'package:ju_learn/main.dart';
 
+// ignore: must_be_immutable
 class QuizPage extends StatefulWidget {
   Vault v;
   Function saveState;