diff --git a/mainwindow.cpp b/mainwindow.cpp
index ce62a46..6b52afd 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -522,7 +522,6 @@ void MainWindow::serialError(QSerialPort::SerialPortError error)
     ui->connectBtn->setText("Connect");
     ui->sendBtn->setDisabled(true);
     ui->pauseBtn->setDisabled(true);
-    ui->progressBar->setValue(0);
     ui->controlBox->setDisabled(true);
     ui->consoleGroup->setDisabled(true);