diff --git a/lib/core/application.dart b/lib/core/application.dart
index 5b34c5c..ababf8d 100644
--- a/lib/core/application.dart
+++ b/lib/core/application.dart
@@ -3,16 +3,15 @@ import 'dart:async';
 import 'log.dart';
 
 abstract class Application {
+  late Function(Object, StackTrace) writeLog;
+
   Application(Function() func, Function(Object, StackTrace) errorListener) {
     runZonedGuarded(() async {
+      writeLog = (error, stack) => logError('$error:\n$stack');
       func();
     }, (error, stack) {
       writeLog(error, stack);
       errorListener(error, stack);
     });
   }
-
-  void writeLog(Object error, StackTrace stack) {
-    logError('$error:\n$stack');
-  }
 }