diff --git a/src/endiannessbox.h b/src/endiannessbox.h
new file mode 100644
--- /dev/null
+++ b/src/endiannessbox.h
@@ -0,0 +1,53 @@
+/*
+  Copyright © 2016 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 ENDIANNESSBOX_H
+#define ENDIANNESSBOX_H
+
+#include <QWidget>
+
+namespace Ui {
+class EndiannessBox;
+}
+
+enum Endianness
+{
+    LittleEndian,
+    BigEndian
+};
+
+class EndiannessBox : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit EndiannessBox(QWidget *parent = 0);
+    ~EndiannessBox();
+
+    Endianness currentSelection(); ///< currently selected endianness
+
+signals:
+    /// Signaled when endianness selection is changed
+    void selectionChanged(Endianness endianness);
+
+private:
+    Ui::EndiannessBox *ui;
+};
+
+#endif // ENDIANNESSBOX_H