diff --git a/src/framedreader.h b/src/framedreader.h
--- a/src/framedreader.h
+++ b/src/framedreader.h
@@ -1,5 +1,5 @@
 /*
-  Copyright © 2017 Hasan Yavuz Özderya
+  Copyright © 2018 Hasan Yavuz Özderya
 
   This file is part of serialplot.
 
@@ -33,10 +33,9 @@ class FramedReader : public AbstractRead
     Q_OBJECT
 
 public:
-    explicit FramedReader(QIODevice* device, ChannelManager* channelMan,
-                          DataRecorder* recorder, QObject *parent = 0);
+    explicit FramedReader(QIODevice* device, QObject *parent = 0);
     QWidget* settingsWidget();
-    unsigned numOfChannels();
+    unsigned numChannels() const;
     void enable(bool enabled = true);
     /// Stores settings into a `QSettings`
     void saveSettings(QSettings* settings);
@@ -56,7 +55,7 @@ private:
 
     // settings related members
     FramedReaderSettings _settingsWidget;
-    unsigned _numOfChannels;
+    unsigned _numChannels;
     unsigned sampleSize;
     bool paused;
     unsigned settingsInvalid;   /// settings are all valid if this is 0, if not no reading is done