diff --git a/src/blacksound/threadedtonepairplayer.cpp b/src/blacksound/threadedtonepairplayer.cpp
index cc75fd839..3cc0051a6 100644
--- a/src/blacksound/threadedtonepairplayer.cpp
+++ b/src/blacksound/threadedtonepairplayer.cpp
@@ -14,7 +14,6 @@ using namespace BlackMisc;
 
 namespace BlackSound
 {
-
     CThreadedTonePairPlayer::CThreadedTonePairPlayer(QObject *owner, const QString &name, const QAudioDeviceInfo &device)
         : CContinuousWorker(owner, name),
           m_deviceInfo(device)
diff --git a/src/blacksound/threadedtonepairplayer.h b/src/blacksound/threadedtonepairplayer.h
index d187c080c..a1cbd1291 100644
--- a/src/blacksound/threadedtonepairplayer.h
+++ b/src/blacksound/threadedtonepairplayer.h
@@ -38,7 +38,7 @@ namespace BlackSound
         CThreadedTonePairPlayer(QObject *owner, const QString &name, const QAudioDeviceInfo &device = QAudioDeviceInfo::defaultOutputDevice());
 
         //! Destructor
-        ~CThreadedTonePairPlayer();
+        virtual ~CThreadedTonePairPlayer();
 
     public slots:
         //! Play the list of tones.