diff --git a/src/blackcore/afv/clients/afvclient.cpp b/src/blackcore/afv/clients/afvclient.cpp
index f94821363..f8abf5b33 100644
--- a/src/blackcore/afv/clients/afvclient.cpp
+++ b/src/blackcore/afv/clients/afvclient.cpp
@@ -338,7 +338,6 @@ namespace BlackCore
 
                         m_output->start(useOutputDevice, m_outputSampleProvider);
                         m_input->start(useInputDevice);
-                        m_startDateTimeUtc = QDateTime::currentDateTimeUtc();
 
                         // runs in correct thread
                         m_voiceServerTimer->start(PositionUpdatesMs); // start for preset values
diff --git a/src/blackcore/afv/clients/afvclient.h b/src/blackcore/afv/clients/afvclient.h
index c7414bfbb..2430f4100 100644
--- a/src/blackcore/afv/clients/afvclient.h
+++ b/src/blackcore/afv/clients/afvclient.h
@@ -113,9 +113,6 @@ namespace BlackCore
                 //! Client started?
                 bool isStarted() const { return m_isStarted; }
 
-                //! When started
-                const QDateTime &getStartDateTimeUtc() const { return m_startDateTimeUtc; }
-
                 //! Muted
                 //! \threadsafe
                 //! @{
@@ -411,8 +408,6 @@ namespace BlackCore
                 std::atomic_bool m_winCoInitialized   { false }; //!< Windows only CoInitializeEx
                 std::atomic_bool m_integratedComUnit  { false }; //!< is COM unit sychronized, integrated?
 
-                QDateTime m_startDateTimeUtc;
-
                 double m_inputVolumeDb   = 0.0;
                 int m_outputMasterVolumeNormalized = 0;
                 int m_outputVolumeCom1Normalized = 0;
diff --git a/src/blackmisc/audio/notificationsounds.h b/src/blackmisc/audio/notificationsounds.h
index 27e747c4d..4d2d941c9 100644
--- a/src/blackmisc/audio/notificationsounds.h
+++ b/src/blackmisc/audio/notificationsounds.h
@@ -25,14 +25,6 @@ namespace BlackMisc
          */
         struct BLACKMISC_EXPORT CNotificationSounds
         {
-            //! How to play?
-            enum PlayMode
-            {
-                Single,
-                SingleWithAutomaticDeletion,
-                EndlessLoop
-            };
-
             //! Play notification
             enum NotificationFlag
             {
@@ -84,7 +76,6 @@ namespace BlackMisc
     } // ns
 } // ns
 
-Q_DECLARE_METATYPE(BlackMisc::Audio::CNotificationSounds::PlayMode)
 Q_DECLARE_METATYPE(BlackMisc::Audio::CNotificationSounds::Notification)
 Q_DECLARE_METATYPE(BlackMisc::Audio::CNotificationSounds::NotificationFlag)
 
diff --git a/src/blackmisc/audio/registermetadataaudio.cpp b/src/blackmisc/audio/registermetadataaudio.cpp
index 9947d22cc..e11657640 100644
--- a/src/blackmisc/audio/registermetadataaudio.cpp
+++ b/src/blackmisc/audio/registermetadataaudio.cpp
@@ -26,10 +26,8 @@ namespace BlackMisc
 
             // ENUMs
             qDBusRegisterMetaType<PTTCOM>();
-            qDBusRegisterMetaType<CNotificationSounds::PlayMode>();
             qDBusRegisterMetaType<CNotificationSounds::NotificationFlag>();
             qDBusRegisterMetaType<CAudioDeviceInfo::DeviceType>();
-            qRegisterMetaTypeStreamOperators<CNotificationSounds::PlayMode>();
             qRegisterMetaTypeStreamOperators<CNotificationSounds::NotificationFlag>();
         }
     }
diff --git a/src/blackmisc/math/mathutils.cpp b/src/blackmisc/math/mathutils.cpp
index aeadc8a47..3b003c635 100644
--- a/src/blackmisc/math/mathutils.cpp
+++ b/src/blackmisc/math/mathutils.cpp
@@ -20,16 +20,6 @@ namespace BlackMisc
 {
     namespace Math
     {
-        double CMathUtils::hypot(double x, double y)
-        {
-            x = qAbs(x);
-            y = qAbs(y);
-            const double max = std::max(x, y);
-            const double min = std::min(x, y);
-            double r = min / max;
-            return max * sqrt(1 + r * r);
-        }
-
         double CMathUtils::cubicRootReal(double x)
         {
             const double result = std::pow(qAbs(x), 1.0 / 3.0);
diff --git a/src/blackmisc/math/mathutils.h b/src/blackmisc/math/mathutils.h
index 33d48350a..d30f9c474 100644
--- a/src/blackmisc/math/mathutils.h
+++ b/src/blackmisc/math/mathutils.h
@@ -30,9 +30,6 @@ namespace BlackMisc
             //! No objects, just static
             CMathUtils() = delete;
 
-            //! Calculates the hypotenuse of x and y without overflow
-            static double hypot(double x, double y);
-
             //! Calculates the square of x
             static inline double square(double x)
             {