diff --git a/mainwindow.cpp b/mainwindow.cpp
index 97b2a05..393bf17 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -157,7 +157,7 @@ MainWindow::MainWindow(hwinf *hw, Worker *worker, Update *update, QWidget *paren
     connect(m_worker, SIGNAL(showStatusMessage(QString,QString)),this, SLOT(onShowStatusMessage(QString,QString)));
     connect(m_worker, SIGNAL(showErrorMessage(QStringList)),this, SLOT(onShowErrorMessage(QStringList)));
     connect(m_worker, SIGNAL(showStatusMessage(QString,QString)),this, SLOT(onShowStatusMessage(QString,QString)));
-    connect(m_worker, SIGNAL(replaceLast(QStringList)),this,SLOT(onReplaceLast(QStringList)));
+    connect(m_worker, SIGNAL(replaceLast(QString,QString)),this,SLOT(onReplaceLast(QString,QString)));
     connect(m_worker, SIGNAL(replaceLast(QStringList,QString)),this, SLOT(onReplaceLast(QStringList,QString)));
 }
 
@@ -329,8 +329,18 @@ void MainWindow::onRestartExitTimer() {
 
 void MainWindow::onQuit() {
     m_exitTimer->stop();
-    qCritical() << QString("ON QUIT: EXIT CODE %1").arg(m_worker->returnCode());
-    qApp->exit(m_worker->returnCode());
+    int errorCode = 0;
+
+    qCritical()
+        << QString("ON QUIT: CURRENT STEP %1")
+            .arg(m_worker->getSmap()[m_worker->currentStep()]);
+
+    // TODO: replace SEND_LAST_VERSION with UPDATE_SUCCEEDED
+    if (m_worker->currentStep() != Worker::UPDATE_STEP::SEND_LAST_VERSION) {
+        errorCode = -1;
+    }
+    qCritical() << QString("ON QUIT: EXIT CODE %1").arg(errorCode);
+    qApp->exit(errorCode);
 }
 
 void MainWindow::scrollDownTextEdit() {