diff --git a/lib/main.dart b/lib/main.dart
index 4ee3b3e..18433dc 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -41,6 +41,9 @@ void main() => runApp(
           GlobalWidgetsLocalizations.delegate,
         ],
         localeResolutionCallback: (locale, supportedLocales) {
+          if (locale == null) {
+            return supportedLocales.first;
+          }
           List<Locale> sameLanguageLocales = [];
           for (var supportedLocale in supportedLocales) {
             if (supportedLocale.languageCode == locale.languageCode) {