diff --git a/libnymea-app/connection/networkreachabilitymonitor.cpp b/libnymea-app/connection/networkreachabilitymonitor.cpp
index 2bdc5414..c46b9a21 100644
--- a/libnymea-app/connection/networkreachabilitymonitor.cpp
+++ b/libnymea-app/connection/networkreachabilitymonitor.cpp
@@ -28,9 +28,8 @@ NetworkReachabilityMonitor::NetworkReachabilityMonitor(QObject *parent)
     });
 
     QGuiApplication *app = static_cast<QGuiApplication*>(QGuiApplication::instance());
-    QObject::connect(app, &QGuiApplication::applicationStateChanged, this, [app, this](Qt::ApplicationState state) {
+    QObject::connect(app, &QGuiApplication::applicationStateChanged, this, [this](Qt::ApplicationState state) {
         qCDebug(dcNymeaConnection()) << "Application state changed to:" << state;
-
         updateActiveBearers();
     });
 
diff --git a/libnymea-app/connection/tunnelproxytransport.cpp b/libnymea-app/connection/tunnelproxytransport.cpp
index c1748406..8f389f03 100644
--- a/libnymea-app/connection/tunnelproxytransport.cpp
+++ b/libnymea-app/connection/tunnelproxytransport.cpp
@@ -77,19 +77,24 @@ QUrl TunnelProxyTransport::url() const
 
 NymeaTransportInterface::ConnectionState TunnelProxyTransport::connectionState() const
 {
+    NymeaTransportInterface::ConnectionState state = NymeaTransportInterface::ConnectionStateDisconnected;
     switch (m_remoteConnection->state()) {
     case TunnelProxyRemoteConnection::StateRemoteConnected:
-        return NymeaTransportInterface::ConnectionStateConnected;
+        state = NymeaTransportInterface::ConnectionStateConnected;
+        break;
     case TunnelProxyRemoteConnection::StateConnecting:
     case TunnelProxyRemoteConnection::StateHostLookup:
     case TunnelProxyRemoteConnection::StateConnected:
     case TunnelProxyRemoteConnection::StateInitializing:
     case TunnelProxyRemoteConnection::StateRegister:
-        return NymeaTransportInterface::ConnectionStateConnecting;
+        state = NymeaTransportInterface::ConnectionStateConnecting;
+        break;
     case TunnelProxyRemoteConnection::StateDiconnecting:
     case TunnelProxyRemoteConnection::StateDisconnected:
-        return NymeaTransportInterface::ConnectionStateDisconnected;
+        state = NymeaTransportInterface::ConnectionStateDisconnected;
+        break;
     }
+    return state;
 }
 
 void TunnelProxyTransport::disconnect()
diff --git a/libnymea-app/wifisetup/btwifisetup.cpp b/libnymea-app/wifisetup/btwifisetup.cpp
index 3cfbe2c6..c8dd9942 100644
--- a/libnymea-app/wifisetup/btwifisetup.cpp
+++ b/libnymea-app/wifisetup/btwifisetup.cpp
@@ -334,11 +334,9 @@ void BtWiFiSetup::streamData(QLowEnergyService *service, const QUuid &characteri
     QLowEnergyCharacteristic characteristic = service->characteristic(characteristicUuid);
     QByteArray data = QJsonDocument::fromVariant(request).toJson(QJsonDocument::Compact) + '\n';
 
-    int sentDataLength = 0;
     QByteArray remainingData = data;
     while (!remainingData.isEmpty()) {
         QByteArray package = remainingData.left(20);
-        sentDataLength += package.count();
         m_wifiService->writeCharacteristic(characteristic, package);
         remainingData = remainingData.remove(0, package.count());
     }
diff --git a/libnymea-app/zwave/zwavenode.cpp b/libnymea-app/zwave/zwavenode.cpp
index 8b06e310..929536e5 100644
--- a/libnymea-app/zwave/zwavenode.cpp
+++ b/libnymea-app/zwave/zwavenode.cpp
@@ -296,6 +296,8 @@ int ZWaveNodes::rowCount(const QModelIndex &parent) const
 
 QVariant ZWaveNodes::data(const QModelIndex &index, int role) const
 {
+    Q_UNUSED(index)
+    Q_UNUSED(role)
     return QVariant();
 }
 
diff --git a/nymea-app/nfcthingactionwriter.cpp b/nymea-app/nfcthingactionwriter.cpp
index 6c5fb15a..8dd29156 100644
--- a/nymea-app/nfcthingactionwriter.cpp
+++ b/nymea-app/nfcthingactionwriter.cpp
@@ -137,10 +137,9 @@ void NfcThingActionWriter::updateContent()
 
     QNdefNfcUriRecord record;
     record.setUri(url);
-    QNdefMessage message;
-    message.append(record);
 
-    m_currentMessage = message;
+    m_currentMessage.clear();
+    m_currentMessage.append(record);
     emit messageSizeChanged();
 
 }
diff --git a/shared.pri b/shared.pri
index b2fb467c..c0486dee 100644
--- a/shared.pri
+++ b/shared.pri
@@ -1,4 +1,6 @@
-CONFIG += c++11
+CONFIG *= c++14
+QMAKE_LFLAGS *= -std=c++14
+QMAKE_CXXFLAGS *= -std=c++14
 
 top_srcdir=$$PWD
 top_builddir=$$shadowed($$PWD)