diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -179,10 +179,6 @@ MainWindow::MainWindow(QWidget *parent) 
     QObject::connect(snapshotMan.takeSnapshotAction(), &QAction::triggered,
                      plotMan, &PlotManager::flashSnapshotOverlay);
 
-    // init port signals
-    QObject::connect(&(this->serialPort), SIGNAL(error(QSerialPort::SerialPortError)),
-                     this, SLOT(onPortError(QSerialPort::SerialPortError)));
-
     // init data format and reader
     QObject::connect(&channelMan, &ChannelManager::dataAdded,
                      plotMan, &PlotManager::replot);
@@ -372,64 +368,6 @@ void MainWindow::onPortToggled(bool open
     ui->actionDemoMode->setEnabled(!open);
 }
 
-void MainWindow::onPortError(QSerialPort::SerialPortError error)
-{
-    switch(error)
-    {
-        case QSerialPort::NoError :
-            break;
-        case QSerialPort::ResourceError :
-            qWarning() << "Port error: resource unavaliable; most likely device removed.";
-            if (serialPort.isOpen())
-            {
-                qWarning() << "Closing port on resource error: " << serialPort.portName();
-                portControl.togglePort();
-            }
-            portControl.loadPortList();
-            break;
-        case QSerialPort::DeviceNotFoundError:
-            qCritical() << "Device doesn't exists: " << serialPort.portName();
-            break;
-        case QSerialPort::PermissionError:
-            qCritical() << "Permission denied. Either you don't have \
-required privileges or device is already opened by another process.";
-            break;
-        case QSerialPort::OpenError:
-            qWarning() << "Device is already opened!";
-            break;
-        case QSerialPort::NotOpenError:
-            qCritical() << "Device is not open!";
-            break;
-        case QSerialPort::ParityError:
-            qCritical() << "Parity error detected.";
-            break;
-        case QSerialPort::FramingError:
-            qCritical() << "Framing error detected.";
-            break;
-        case QSerialPort::BreakConditionError:
-            qCritical() << "Break condition is detected.";
-            break;
-        case QSerialPort::WriteError:
-            qCritical() << "An error occurred while writing data.";
-            break;
-        case QSerialPort::ReadError:
-            qCritical() << "An error occurred while reading data.";
-            break;
-        case QSerialPort::UnsupportedOperationError:
-            qCritical() << "Operation is not supported.";
-            break;
-        case QSerialPort::TimeoutError:
-            qCritical() << "A timeout error occurred.";
-            break;
-        case QSerialPort::UnknownError:
-            qCritical() << "Unknown error! Error: " << serialPort.errorString();
-            break;
-        default:
-            qCritical() << "Unhandled port error: " << error;
-            break;
-    }
-}
-
 void MainWindow::clearPlot()
 {
     for (unsigned ci = 0; ci < channelMan.numOfChannels(); ci++)
diff --git a/src/mainwindow.h b/src/mainwindow.h
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -112,7 +112,6 @@ private:
 
 private slots:
     void onPortToggled(bool open);
-    void onPortError(QSerialPort::SerialPortError error);
 
     void onNumOfSamplesChanged(int value);
     void onNumOfChannelsChanged(unsigned value);
diff --git a/src/portcontrol.cpp b/src/portcontrol.cpp
--- a/src/portcontrol.cpp
+++ b/src/portcontrol.cpp
@@ -48,6 +48,8 @@ PortControl::PortControl(QSerialPort* po
     ui->setupUi(this);
 
     serialPort = port;
+    connect(serialPort, SIGNAL(error(QSerialPort::SerialPortError)),
+            this, SLOT(onPortError(QSerialPort::SerialPortError)));
 
     // setup actions
     openAction.setCheckable(true);
@@ -362,6 +364,64 @@ void PortControl::onTbPortListActivated(
     ui->cbPortList->setCurrentIndex(index);
 }
 
+void PortControl::onPortError(QSerialPort::SerialPortError error)
+{
+    switch(error)
+    {
+        case QSerialPort::NoError :
+            break;
+        case QSerialPort::ResourceError :
+            qWarning() << "Port error: resource unavaliable; most likely device removed.";
+            if (serialPort->isOpen())
+            {
+                qWarning() << "Closing port on resource error: " << serialPort->portName();
+                togglePort();
+            }
+            loadPortList();
+            break;
+        case QSerialPort::DeviceNotFoundError:
+            qCritical() << "Device doesn't exists: " << serialPort->portName();
+            break;
+        case QSerialPort::PermissionError:
+            qCritical() << "Permission denied. Either you don't have \
+required privileges or device is already opened by another process.";
+            break;
+        case QSerialPort::OpenError:
+            qWarning() << "Device is already opened!";
+            break;
+        case QSerialPort::NotOpenError:
+            qCritical() << "Device is not open!";
+            break;
+        case QSerialPort::ParityError:
+            qCritical() << "Parity error detected.";
+            break;
+        case QSerialPort::FramingError:
+            qCritical() << "Framing error detected.";
+            break;
+        case QSerialPort::BreakConditionError:
+            qCritical() << "Break condition is detected.";
+            break;
+        case QSerialPort::WriteError:
+            qCritical() << "An error occurred while writing data.";
+            break;
+        case QSerialPort::ReadError:
+            qCritical() << "An error occurred while reading data.";
+            break;
+        case QSerialPort::UnsupportedOperationError:
+            qCritical() << "Operation is not supported.";
+            break;
+        case QSerialPort::TimeoutError:
+            qCritical() << "A timeout error occurred.";
+            break;
+        case QSerialPort::UnknownError:
+            qCritical() << "Unknown error! Error: " << serialPort->errorString();
+            break;
+        default:
+            qCritical() << "Unhandled port error: " << error;
+            break;
+    }
+}
+
 void PortControl::updatePinLeds(void)
 {
     auto pins = serialPort->pinoutSignals();
diff --git a/src/portcontrol.h b/src/portcontrol.h
--- a/src/portcontrol.h
+++ b/src/portcontrol.h
@@ -92,6 +92,7 @@ private slots:
     void openActionTriggered(bool checked);
     void onCbPortListActivated(int index);
     void onTbPortListActivated(int index);
+    void onPortError(QSerialPort::SerialPortError error);
     void updatePinLeds(void);
 
 signals: