diff --git a/customcheckablebutton.h b/customcheckablebutton.h
deleted file mode 100644
--- a/customcheckablebutton.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
-  Copyright © 2015 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 CUSTOMCHECKABLEBUTTON_H
-#define CUSTOMCHECKABLEBUTTON_H
-
-#include <QPushButton>
-
-class CustomCheckableButton : public QPushButton
-{
-    Q_OBJECT
-public:
-    explicit CustomCheckableButton(QWidget *parent = 0);
-
-signals:
-
-public slots:
-
-private:
-    void nextCheckState();
-
-};
-
-#endif // CUSTOMCHECKABLEBUTTON_H