diff --git a/src/dataformatpanel.cpp b/src/dataformatpanel.cpp
--- a/src/dataformatpanel.cpp
+++ b/src/dataformatpanel.cpp
@@ -182,7 +182,7 @@ void DataFormatPanel::enableDemo(bool en
 void DataFormatPanel::spsTimerTimeout()
 {
     unsigned currentSps = _samplesPerSecond;
-    _samplesPerSecond = sampleCount/SPS_UPDATE_TIMEOUT;
+    _samplesPerSecond = (sampleCount/_numOfChannels)/SPS_UPDATE_TIMEOUT;
     if (currentSps != _samplesPerSecond)
     {
         emit samplesPerSecondChanged(_samplesPerSecond);
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -199,7 +199,7 @@ MainWindow::MainWindow(QWidget *parent) 
 
     // Init sps (sample per second) counter
     spsLabel.setText("0sps");
-    spsLabel.setToolTip("samples per second (total of all channels)");
+    spsLabel.setToolTip("samples per second (per channel)");
     ui->statusBar->addPermanentWidget(&spsLabel);
     QObject::connect(&dataFormatPanel,
                      &DataFormatPanel::samplesPerSecondChanged,