diff --git a/LenaPi/MusicPlayer.qml b/LenaPi/MusicPlayer.qml
index 41bc541..dae3f55 100644
--- a/LenaPi/MusicPlayer.qml
+++ b/LenaPi/MusicPlayer.qml
@@ -68,7 +68,6 @@ Item{
         stepSize: 1
         value: musicModel.pAudioVolume
         onValueChanged: {
-            console.log(musicModel.pAudioVolume, value);
             musicModel.pAudioVolume = value;
         }
     }
diff --git a/LenaPi/controllers/NavigationController.h b/LenaPi/controllers/NavigationController.h
index 8350600..7ed2497 100644
--- a/LenaPi/controllers/NavigationController.h
+++ b/LenaPi/controllers/NavigationController.h
@@ -13,7 +13,7 @@ class NavigationController : public QObject
 {
     Q_OBJECT
 public:
-    NavigationController(QObject *parent = Q_NULLPTR);
+    explicit NavigationController(QObject *parent = nullptr);
 
     void init(const QString & rootPath);
 
@@ -32,7 +32,7 @@ private:
 
     QString mRootPath = ".";
 
-    QQmlContext* mContext = Q_NULLPTR;
+    QQmlContext* mContext = nullptr;
 
 private slots:
     void onNavigationRequest();