diff --git a/src/Gui/NavigationStyle.cpp b/src/Gui/NavigationStyle.cpp
index c437ef4f40..13941c0ea0 100644
--- a/src/Gui/NavigationStyle.cpp
+++ b/src/Gui/NavigationStyle.cpp
@@ -20,10 +20,17 @@
  *                                                                         *
  ***************************************************************************/
 
-
 #include "PreCompiled.h"
 #ifndef _PreComp_
-# include "InventorAll.h"
+# include <Inventor/SbViewportRegion.h>
+# include <Inventor/SoPickedPoint.h>
+# include <Inventor/actions/SoGetBoundingBoxAction.h>
+# include <Inventor/errors/SoDebugError.h>
+# include <Inventor/nodes/SoSeparator.h>
+# include <Inventor/nodes/SoCamera.h>
+# include <Inventor/nodes/SoOrthographicCamera.h>
+# include <Inventor/nodes/SoPerspectiveCamera.h>
+# include <Inventor/projectors/SbSphereSheetProjector.h>
 # include <QAction>
 # include <QActionGroup>
 # include <QApplication>