diff --git a/canvas/source/vcl/bitmapbackbuffer.cxx b/canvas/source/vcl/bitmapbackbuffer.cxx
index ac21f92b4b49..3761e8ba9384 100644
--- a/canvas/source/vcl/bitmapbackbuffer.cxx
+++ b/canvas/source/vcl/bitmapbackbuffer.cxx
@@ -4,9 +4,9 @@
  *
  *  $RCSfile: bitmapbackbuffer.cxx,v $
  *
- *  $Revision: 1.4 $
+ *  $Revision: 1.5 $
  *
- *  last change: $Author: rt $ $Date: 2005-09-07 23:16:12 $
+ *  last change: $Author: kz $ $Date: 2005-11-02 12:57:20 $
  *
  *  The Contents of this file are made available subject to
  *  the terms of GNU Lesser General Public License Version 2.1.
@@ -35,22 +35,12 @@
 
 #include "bitmapbackbuffer.hxx"
 
-#ifndef _OSL_MUTEX_HXX_
 #include <osl/mutex.hxx>
-#endif
-#ifndef _VOS_MUTEX_HXX_
 #include <vos/mutex.hxx>
-#endif
 
-#ifndef _SV_SVAPP_HXX
 #include <vcl/svapp.hxx>
-#endif
-#ifndef _SV_BITMAPEX_HXX
 #include <vcl/bitmapex.hxx>
-#endif
-#ifndef _SV_BMPACC_HXX
 #include <vcl/bmpacc.hxx>
-#endif
 
 
 namespace vclcanvas