set title of fatal error message box

App/MessageHandler.cpp

@@ -38,11 +38,14 @@ void messageHandler(QtMsgType type, const QMessageLogContext&, const QString& ms
     case QtFatalMsg:
         std::cerr << "FATAL: " << msg.toStdString() << std::endl;
         qApp->restoreOverrideCursor();
-        QMessageBox::critical(QApplication::activeWindow(), qAppName(),
-                              "Sorry, you encountered a fatal bug.\n"
-                              "The application will terminate.\n"
-                              "Please note the following and inform the maintainers.\n\n"
-                                  + msg + "\n");
+        QMessageBox msgbox(QMessageBox::Critical, "BornAgain: fatal bug",
+                           "Sorry, you encountered a fatal bug.\n"
+                           "The application will terminate.\n"
+                           "Please note the following and inform the maintainers.\n\n"
+                           + msg + "\n",
+                           QMessageBox::Ok,
+                           QApplication::activeWindow());
+        msgbox.exec();
         qApp->quit();
         exit(1);
     }