diff --git a/mainwindow.cpp b/mainwindow.cpp
index 37e1f75..070e028 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -5,9 +5,10 @@
 #include <QAudioDeviceInfo>
 #include <QButtonGroup>
 
-MainWindow::MainWindow(QWidget *parent) :
-    QMainWindow(parent),
-    m_audioDevices(QAudioDeviceInfo::availableDevices(QAudio::AudioInput))
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent)
+    , m_audioDevices(QAudioDeviceInfo::availableDevices(QAudio::AudioInput))
+    , m_ui()
 {
     m_ui.setupUi(this);