diff --git a/gui/src/MainWindow.hpp b/gui/src/MainWindow.hpp
index 1658195..deb4a66 100644
--- a/gui/src/MainWindow.hpp
+++ b/gui/src/MainWindow.hpp
@@ -34,7 +34,7 @@ class MainWindow : public QMainWindow
 {
 	Q_OBJECT
 public:
-    MainWindow(QWidget *parent = 0);
+	MainWindow(QWidget *parent = 0);
 
 private slots :