diff --git a/FileOBJ.hh b/FileOBJ.hh
index fdb8f325488957165dffb087ed99144765e2fb62..73ebabc13c7365b1a17b8f77783a012947e3838a 100644
--- a/FileOBJ.hh
+++ b/FileOBJ.hh
@@ -47,10 +47,14 @@
 *                                                                            *
 \*===========================================================================*/
 
-#ifndef FILEOBJPLUGIN_HH
-#define FILEOBJPLUGIN_HH
+#pragma once
 
 #include <QObject>
+#include <QCheckBox>
+#include <QLabel>
+#include <QSpinBox>
+#include <QPushButton>
+#include <QComboBox>
 
 #include <OpenFlipper/common/Types.hh>
 #include <OpenFlipper/BasePlugin/BaseInterface.hh>
@@ -261,4 +265,3 @@ class FileOBJPlugin : public QObject, BaseInterface, FileInterface, LoadSaveInte
 #endif
 
 
-#endif //FILEOBJPLUGIN_HH