diff --git a/src/binarystreamreader.h b/src/binarystreamreader.h
--- a/src/binarystreamreader.h
+++ b/src/binarystreamreader.h
@@ -1,5 +1,5 @@
 /*
-  Copyright © 2016 Hasan Yavuz Özderya
+  Copyright © 2017 Hasan Yavuz Özderya
 
   This file is part of serialplot.
 
@@ -65,9 +65,6 @@ private:
      */
     template<typename T> double readSampleAs();
 
-    // `data` contains i th channels data
-    void addChannelData(unsigned int channel, double* data, unsigned size);
-
 private slots:
     void onNumberFormatChanged(NumberFormat numberFormat);
     void onNumOfChannelsChanged(unsigned value);