diff --git a/src/framebuffer.h b/src/framebuffer.h
deleted file mode 100644
--- a/src/framebuffer.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
-  Copyright © 2017 Hasan Yavuz Özderya
-
-  This file is part of serialplot.
-
-  serialplot is free software: you can redistribute it and/or modify
-  it under the terms of the GNU General Public License as published by
-  the Free Software Foundation, either version 3 of the License, or
-  (at your option) any later version.
-
-  serialplot is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  GNU General Public License for more details.
-
-  You should have received a copy of the GNU General Public License
-  along with serialplot.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#ifndef FRAMEBUFFER_H
-#define FRAMEBUFFER_H
-
-#include <QPointF>
-#include <QRectF>
-
-class FrameBuffer
-{
-public:
-    FrameBuffer(size_t size);
-    ~FrameBuffer();
-
-    void resize(size_t size);
-    void addSamples(double* samples, size_t size);
-    void clear(); // fill 0
-
-    // QwtSeriesData related implementations
-    size_t size() const;
-    QRectF boundingRect() const;
-    double sample(size_t i) const;
-
-private:
-    size_t _size; // size of `data`
-    double* data;
-    size_t headIndex; // indicates the actual `0` index of the ring buffer
-
-    mutable bool brInvalid; ///< Indicates that bounding rectangle needs to be re-calculated
-    mutable QRectF _brCache; ///< Cache for boundingRect()
-    void updateBoundingRect() const; ///< Updates bounding rectangle cache
-};
-
-#endif // FRAMEBUFFER_H