diff --git a/src/client.cpp b/src/client.cpp
index be5b7502..418d38d1 100755
--- a/src/client.cpp
+++ b/src/client.cpp
@@ -36,7 +36,8 @@ CClient::CClient ( const quint16 iPortNumber ) :
     strIPAddress ( "" ), strName ( "" ),
     bOpenChatOnNewMessage ( true ),
     bDoAutoSockBufSize ( true ),
-    iSndCrdPreferredMonoBlSizeIndex ( CSndCrdBufferSizes::GetDefaultIndex() )
+    iSndCrdPreferredMonoBlSizeIndex ( CSndCrdBufferSizes::GetDefaultIndex() ),
+    iSndCrdMonoBlockSizeSam ( 0 )
 {
     // connection for protocol
     QObject::connect ( &Channel,
diff --git a/src/client.h b/src/client.h
index f25f0448..924251db 100755
--- a/src/client.h
+++ b/src/client.h
@@ -121,6 +121,7 @@ public:
     void SetSndCrdPreferredMonoBlSizeIndex ( const int iNewIdx );
     int GetSndCrdPreferredMonoBlSizeIndex()
         { return iSndCrdPreferredMonoBlSizeIndex; }
+    int GetSndCrdActualMonoBlSize() { return iSndCrdMonoBlockSizeSam; }
 
     void SetAudioCompressionOut ( const EAudComprType eNewAudComprTypeOut )
     {
diff --git a/src/clientsettingsdlg.cpp b/src/clientsettingsdlg.cpp
index d466dc8c..e6f88bed 100755
--- a/src/clientsettingsdlg.cpp
+++ b/src/clientsettingsdlg.cpp
@@ -163,13 +163,21 @@ void CClientSettingsDlg::UpdateJitterBufferFrame()
 void CClientSettingsDlg::UpdateSoundCardFrame()
 {
     // update slider value and text
-    const int iCurBufIdx = pClient->GetSndCrdPreferredMonoBlSizeIndex();
-    SliderSndCrdBufferDelay->setValue ( iCurBufIdx );
+    const int iCurPrefBufIdx   = pClient->GetSndCrdPreferredMonoBlSizeIndex();
+    const int iCurActualBufIdx = pClient->GetSndCrdActualMonoBlSize();
+    SliderSndCrdBufferDelay->setValue ( iCurPrefBufIdx );
 
+    // preferred size
     TextLabelPreferredSndCrdBufDelay->setText (
-        QString().setNum ( (double) CSndCrdBufferSizes::GetBufferSizeFromIndex ( iCurBufIdx ) *
+        QString().setNum ( (double) CSndCrdBufferSizes::GetBufferSizeFromIndex ( iCurPrefBufIdx ) *
         1000 / SND_CRD_SAMPLE_RATE, 'f', 2 ) + " ms (" +
-        QString().setNum ( CSndCrdBufferSizes::GetBufferSizeFromIndex ( iCurBufIdx ) ) + ")" );
+        QString().setNum ( CSndCrdBufferSizes::GetBufferSizeFromIndex ( iCurPrefBufIdx ) ) + ")" );
+
+    // actual size
+    TextLabelActualSndCrdBufDelay->setText (
+        QString().setNum ( (double) iCurActualBufIdx *
+        1000 / SND_CRD_SAMPLE_RATE, 'f', 2 ) + " ms (" +
+        QString().setNum ( iCurActualBufIdx ) + ")" );
 }
 
 void CClientSettingsDlg::showEvent ( QShowEvent* showEvent )