diff --git a/mainwindow.cpp b/mainwindow.cpp
index a3e4396..ae79de8 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -170,21 +170,20 @@ void MainWindow::onReplaceLast(QString text, QString suffix) {
         }
     }
 
-    for (int i=0; i<lines.size(); ++i) {
-        qInfo() << lines.at(i);
-    } qInfo() << ""; qInfo() << "";
+    Utils::printLineEditInfo(lines);
 
     ui->updateStatus->setText(lines.join('\n').trimmed());
     ui->updateStatus->setEnabled(true);
 }
+
 void MainWindow::onShowErrorMessage(QString title, QString text) {
     text = text.leftJustified(50, ' ');
     QMessageBox msgBox(QMessageBox::NoIcon, title,
                        text, QMessageBox::Ok,
                        nullptr, Qt::FramelessWindowHint);
     msgBox.setDefaultButton(QMessageBox::Ok);
-    msgBox.setStyleSheet("QDialog {background-color: red;}"
-                         "QPushButton {background-color: blue;}");
+    msgBox.defaultButton()->setVisible(false);
+
     QTimer *t = new QTimer(this);
     connect(t, SIGNAL(timeout()), msgBox.defaultButton(), SLOT(click()));
     t->setSingleShot(true);
@@ -195,5 +194,4 @@ void MainWindow::onShowErrorMessage(QString title, QString text) {
     } else {
       // do something else
     }
-    disconnect(t, SIGNAL(timeout()), msgBox.defaultButton(), SLOT(click()));
 }