diff --git a/src/dataformatpanel.cpp b/src/dataformatpanel.cpp
--- a/src/dataformatpanel.cpp
+++ b/src/dataformatpanel.cpp
@@ -26,7 +26,7 @@
 #include "floatswap.h"
 
 DataFormatPanel::DataFormatPanel(QSerialPort* port,
-                                 QList<FrameBuffer*>* channelBuffers,
+                                 ChannelManager* channelMan,
                                  QWidget *parent) :
     QWidget(parent),
     ui(new Ui::DataFormatPanel)
@@ -34,7 +34,7 @@ DataFormatPanel::DataFormatPanel(QSerial
     ui->setupUi(this);
 
     serialPort = port;
-    _channelBuffers = channelBuffers;
+    _channelMan = channelMan;
     paused = false;
 
     // setup number format buttons
@@ -319,6 +319,6 @@ template<typename T> double DataFormatPa
 void DataFormatPanel::addChannelData(unsigned int channel,
                                      double* data, unsigned size)
 {
-    (*_channelBuffers)[channel]->addSamples(data, size);
+    _channelMan->addChannelData(channel, data, size);
     sampleCount += size;
 }